Skroutz.mt

Crystal Audio BT-04 Bluetooth Wireless On Ear Headphones with 10 hours of Operation White
Headphones

Crystal Audio BT-04 Bluetooth Wireless On Ear Headphones with 10 hours of Operation White

The impressive Crystal Audio BT-04 headphones will offer crystal clear sound. They come in a range of colors and provide a comfortable listening experience, a characteristic of the sound offered by...

The impressive Crystal Audio BT-04 headphones will offer crystal clear sound. They come in a range of colors and provide a comfortable listening experience, a characteristic of the sound offered by Crystal Audio.

Lightweight and compact, the Crystal Audio BT-04 headphones are the perfect travel companion that will surely catch the eye with their charm as you...

See full description See full description

  • Microphone

    The headphones feature a built-in microphone.

  • Foldable Ear Cups

    Folding ear cups help reduce the volume of headphones, making them easier to transport.

    Headphones with folding ear cups often come with a carrying case.

    1
  • Usage Casual Use
  • Connectivity Bluetooth
  • See all
15 90 €
Delivery Wed, 15 Jul - Fri, 17 Jul
14,00 €   shipping cost
Sent from Greece
From DiogeniStore 4.5 (39)
4.5 (39 reviews)
Greece
3 pieces
See Earphones on the page of DiogeniStore
Product report

Description

Description

The impressive Crystal Audio BT-04 headphones will offer crystal clear sound. They come in a range of colors and provide a comfortable listening experience, a characteristic of the sound offered by Crystal Audio.

Lightweight and compact, the Crystal Audio BT-04 headphones are the perfect travel companion that will surely catch the eye with their charm as you navigate the city.

Features

  • Battery 300mAh
  • Charging time: up to 2 hours
  • Battery life: 10 hours
  • AUX Cable Length: 120cm (included)
  • USB Cable Length: 50cm (included)
  • Drivers: 40mm
  • Sensitivity: 105dB +- 3dB
  • Impedance: 32Ω
  • Frequency Response: 20Hz-20KHz
  • Weight: 140g

Manufacturer

Manufacturer Details

Warnings & Safety Information
See full description

Specifications

Specifications

Product Details

Type
On Ear

Type

On Ear

Headphones with smaller ear cups compared to over-ear headphones, which sit on the ears.

They are more portable due to their smaller size, but offer less comfort and isolation from external noise.

Generally, over-ear headphones, thanks to their larger speakers, can offer better sound quality and deep bass compared to on-ear headphones of similar quality.
Impendance
32 ohm

Impendance

The resistance that the speakers of headphones have to electric current. Usually, the lower the resistance, the louder the headphones sound, but the sound is less clear.

This size does not concern the average user as almost all headphones are 32 Ohms. Headphones with high resistance usually require an additional amplifier.
Sensitivity
105 dB

Sensitivity

The greater the sensitivity of the headphones, the louder they will sound at a specific volume of the source. Generally, values above 90db are considered very good. - **Above 100db**: Headphones with high Sensitivity produce more sound with less power. They can reach high volumes with low-power devices (e.g., mobile phone, laptop). - **Below 100db**: Headphones with low Sensitivity require more power to reach the same volume levels, so they may need a special headphone amplifier
Driver Diameter
40 mm

Driver Diameter

The diameter of the headphones' speakers. Usually, the larger the diameter, the more powerful sound with full bass they can offer.
Playing Time
10 hours
Use
Casual Use
Colour
White

Connectivity

Wireless Connections
Bluetooth

Wireless Connections

Bluetooth
They connect wirelessly to devices that also have Bluetooth such as PC, laptop, smartphone or tablet.
Connection
Wireless

Features & Functions

Microphone
Yes

Microphone

The headphones feature a built-in microphone.
Volume Control
Yes

Volume Control

The headphones feature a built-in control for sound volume.
Detachable Cable
Yes

Detachable Cable

The connection cable can be removed from the headphones.

The main advantage is that in case the cable is damaged, it can be easily replaced without needing to buy new headphones. Additionally, wireless headphones can be used as wired ones when the battery is low.
Foldable Drivers
Yes

Foldable Drivers

Folding ear cups help reduce the volume of headphones, making them easier to transport.

Headphones with folding ear cups often come with a carrying case.
Rotating Capsules
No

Rotating Capsules

Rotating ear cups allow headphones to have a flat shape, making them easier to transport (e.g. in a suitcase).
Card Reader
No
Radio
No
Fast Charging
No

Fast Charging

The fast charging feature allows the headphones to gain sufficient autonomy with just a few minutes of charging, ideal for use when time is limited.
High-Resolution Audio
No
Connection with 2 Devices
No
Noise Cancellation
Without

Noise Cancellation

The method of reducing external noise that headphones have.

Top Specs

Connectivity
Bluetooth
Noise Cancellation
-

Noise Cancellation

The method of reducing external noise that the headphones have.

Active Noise Cancellation (ANC): Uses technology to detect and neutralize external noises, offering clearer sound.

Passive Noise Cancellation: The shape and materials of the headphones naturally reduce external noises, improving the listening experience.

Important information

Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.

See all specifications

Reviews (13)

Reviews

3.6
13
3.6
Review this product
  1. 5
  2. 2
  3. 2
  4. 3
  5. 1
Review this product
  • Weight
  • Sound quality
  • Comfort
  • Bass
  • Noise isolation
  • Value for money
  • Construction quality
  • Evelina_Papp
    5
    Evelina_Papp
    This review is about the colour: Black

    Awesome!! I had bought them before and back then they cost €50 and now half that, but they are worth it. The one with the microphone doesn't work on many headphones, especially wireless ones, but they are convenient!!

    Translated from Greek ·
    Did you find this review helpful?
  • herku1004167
    3
    herku1004167
    This review is about the colour: Black

    Very good sound and convenient setup for their price. Convenient that they fold for transport. The battery is large enough so you don't have to think about it much. The microphone doesn't work very well, it sounds like it's coming from a well. With the phone in hand, very good connectivity, however, it often loses connection outside the house. They always act up when I pass under power lines or trolley wires. Also, as other users have pointed out, it has a short range, resulting in disconnection if you turn your head the other way or carry the phone in your left pocket. There is also an annoying rhythmic noise from the left earphone. Imperceptible during normal listening but very annoying during low volume playback or silent intervals in movies. You can definitely find better products at this price now.

    Translated from Greek ·
    Did you find this review helpful?
  • mfroudaraki
    5
    mfroudaraki
    This review is about the colour: Red

    The earphones are very nice, with good sound, bass and I consider them very good for their price!

    Translated from Greek ·
    Did you find this review helpful?
  • Konstantinos_TGR
    4
    Konstantinos_TGR
    This review is about the colour: Black

    I have had them since 2019 and they still work, only the cushions have worn out. They have good sound for their price with good bass. The Bluetooth gets interference if you move away.

    Translated from Greek ·
    • Sound quality
    • Bass
    • Weight
    • Value for money
    • Noise isolation
    • Comfort
    • Construction quality
    Did you find this review helpful?
  • Fido_Dido79
    2
    3 out of 3 members found this review helpful
    Fido_Dido79
    This review is about the colour: Red

    I have had them for over a year. The positives are that they have lasted until now, the sound is loud and clear, and the bass is fine.
    The negatives are that the microphone practically never worked and the Bluetooth, when in an environment with few interferences, gives up.
    It is impossible to walk a long distance and listen to music, it will immediately cut off, freeze, and stop.
    If a taxi passes by you 7 times out of 10, it will interrupt. If the phone is in the opposite pocket from the receiver of the headphones, 9 times out of 10, you will not be able to listen to your music without interruptions. If you turn your head, even slightly, it will immediately pause. Overall, the Bluetooth has issues.

    Translated from Greek ·
    • Noise isolation
    • Comfort
    • Weight
    • Bass
    • Sound quality
    • Value for money
    • Construction quality
    Did you find this review helpful?
  • katerinakikiki
    2
    3 out of 6 members found this review helpful
    katerinakikiki
    This review is about the colour: Black

    They constantly have sound interruptions, it's annoying from the day I bought them, I don't know. Maybe it's the Bluetooth or something else? I do not recommend them. I bought them because they were wireless but they are very bad. They are not worth even 25 euros that I paid for them. I have wired ones with a 15 euro offer from Genesis Gaming that I have been using for 3 years and they have perfect sound and bass. I don't know if I got a defective one.

    Translated from Greek ·
    • Weight
    • Bass
    • Sound quality
    • Noise isolation
    • Comfort
    • Construction quality
    • Value for money
    Did you find this review helpful?
  • Marina oops
    5
    3 out of 3 members found this review helpful
    Marina oops

    It is definitely value for money. I have had them for 2 years and they work perfectly. They are comfortable, have good sound, and their bass is very powerful. Their construction is not so sturdy (plastic), which is why they are also lightweight, but personally, it did not create any problems for me, with a little care, they will not break. The cable is durable and connects directly to the mobile, as well as the direct connection via Bluetooth. The only negatives I can point out are its average battery life and its microphone, which is characterized as average to poor. However, let's not forget that we are talking about headphones worth 20-25 euros. I would definitely buy them again.

    Translated from Greek ·
    • Sound quality
    • Bass
    • Comfort
    • Weight
    • Value for money
    • Noise isolation
    • Construction quality
    Did you find this review helpful?
  • Γιαννης χαλαρης
    5
    1 out of 1 members found this review helpful
    Γιαννης χαλαρης
    This review is about the colour: Red

    Very good headphones, they are worth their money. I have had them for 1.5 years and I use them every day, very loud and overall good quality and good battery life!

    Translated from Greek ·
    • Sound quality
    • Bass
    • Noise isolation
    • Comfort
    • Weight
    • Value for money
    • Construction quality
    Did you find this review helpful?
  • geo.ma10
    1
    4 out of 8 members found this review helpful
    geo.ma10
    This review is about the colour: Black

    They would be good headphones for their price, if they didn't break so easily a piece that cannot be fixed and you need glue.
    No, I didn't misuse them and I took care of them. And then they tell me that they don't have spare parts in the company and they can't fix them for me.

    Translated from Greek ·
    • Sound quality
    • Comfort
    • Weight
    • Bass
    • Noise isolation
    • Construction quality
    • Value for money
    Did you find this review helpful?
  • 5
    Marios_Sim5534
    This review is about the colour: Black

    They are very good for their low price

    Translated from Greek ·
    Did you find this review helpful?
  • 2
    apol5142

    Verified purchase

    This review is about the colour: Black

  • 4
    Eirini_Gialouri

    Verified purchase

    • Noise isolation
    • Construction quality
    • Sound quality
    • Bass
    • Weight
    • Value for money
    • Comfort
  • 3
    sp.kwnstantinos
    This review is about the colour: Black

    • Comfort
    • Weight
    • Bass
    • Noise isolation
    • Construction quality
    • Sound quality
    • Value for money
  • Evelina_Papp
    5
    Evelina_Papp

    Awesome!! I had bought them before and back then they cost €50 and now half that, but they are worth it. The one with the microphone doesn't work on many headphones, especially wireless ones, but they are convenient!!

    Translated from Greek ·
    0
  • herku1004167
    3
    herku1004167

    Very good sound and convenient setup for their price. Convenient that they fold for transport. The battery is large enough so you don't have to think about it much. The microphone doesn't work very well, it sounds like it's coming from a well. With the phone in hand, very good connectivity, however, it often loses connection outside the house. They always act up when I pass under power lines or trolley wires. Also, as other users have pointed out, it has a short range, resulting in disconnection if you turn your head the other way or carry the phone in your left pocket. There is also an annoying rhythmic noise from the left earphone. Imperceptible during normal listening but very annoying during low volume playback or silent intervals in movies. You can definitely find better products at this price now.

    Translated from Greek ·
    0
  • mfroudaraki
    5
    mfroudaraki

    The earphones are very nice, with good sound, bass and I consider them very good for their price!

    Translated from Greek ·
    0
  • Konstantinos_TGR
    4
    Konstantinos_TGR

    I have had them since 2019 and they still work, only the cushions have worn out. They have good sound for their price with good bass. The Bluetooth gets interference if you move away.

    Translated from Greek ·
    0
  • Fido_Dido79
    2
    Fido_Dido79

    I have had them for over a year. The positives are that they have lasted until now, the sound is loud and clear, and the bass is fine.
    The negatives are that the microphone practically never worked and the Bluetooth, when in an environment with few interferences, gives up.
    It is impossible to walk a long distance and listen to music, it will immediately cut off, freeze, and stop.
    If a taxi passes by you 7 times out of 10, it will interrupt. If the phone is in the opposite pocket from the receiver of the headphones, 9 times out of 10, you will not be able to listen to your music without interruptions. If you turn your head, even slightly, it will immediately pause. Overall, the Bluetooth has issues.

    Translated from Greek ·
    3
  • See all

Description & Specifications

The impressive Crystal Audio BT-04 headphones will offer crystal clear sound. They come in a range of colors and provide a comfortable listening experience, a characteristic of the sound offered by Crystal Audio.

Lightweight and compact, the Crystal Audio BT-04 headphones are the perfect travel companion that will surely catch the eye with their charm as you navigate the city.

Features

  • Battery 300mAh
  • Charging time: up to 2 hours
  • Battery life: 10 hours
  • AUX Cable Length: 120cm (included)
  • USB Cable Length: 50cm (included)
  • Drivers: 40mm
  • Sensitivity: 105dB +- 3dB
  • Impedance: 32Ω
  • Frequency Response: 20Hz-20KHz
  • Weight: 140g

Manufacturer

Manufacturer Details

Warnings & Safety Information

Product Details

Type
On Ear

Type

On Ear

Headphones with smaller ear cups compared to over-ear headphones, which sit on the ears.

They are more portable due to their smaller size, but offer less comfort and isolation from external noise.

Generally, over-ear headphones, thanks to their larger speakers, can offer better sound quality and deep bass compared to on-ear headphones of similar quality.
Impendance
32 ohm

Impendance

The resistance that the speakers of headphones have to electric current. Usually, the lower the resistance, the louder the headphones sound, but the sound is less clear.

This size does not concern the average user as almost all headphones are 32 Ohms. Headphones with high resistance usually require an additional amplifier.
Sensitivity
105 dB

Sensitivity

The greater the sensitivity of the headphones, the louder they will sound at a specific volume of the source. Generally, values above 90db are considered very good. - **Above 100db**: Headphones with high Sensitivity produce more sound with less power. They can reach high volumes with low-power devices (e.g., mobile phone, laptop). - **Below 100db**: Headphones with low Sensitivity require more power to reach the same volume levels, so they may need a special headphone amplifier
Driver Diameter
40 mm

Driver Diameter

The diameter of the headphones' speakers. Usually, the larger the diameter, the more powerful sound with full bass they can offer.
Playing Time
10 hours
Use
Casual Use
Colour
White

Connectivity

Wireless Connections
Bluetooth

Wireless Connections

Bluetooth
They connect wirelessly to devices that also have Bluetooth such as PC, laptop, smartphone or tablet.
Connection
Wireless

Features & Functions

Microphone
Yes

Microphone

The headphones feature a built-in microphone.
Volume Control
Yes

Volume Control

The headphones feature a built-in control for sound volume.
Detachable Cable
Yes

Detachable Cable

The connection cable can be removed from the headphones.

The main advantage is that in case the cable is damaged, it can be easily replaced without needing to buy new headphones. Additionally, wireless headphones can be used as wired ones when the battery is low.
Foldable Drivers
Yes

Foldable Drivers

Folding ear cups help reduce the volume of headphones, making them easier to transport.

Headphones with folding ear cups often come with a carrying case.
Rotating Capsules
No

Rotating Capsules

Rotating ear cups allow headphones to have a flat shape, making them easier to transport (e.g. in a suitcase).
Card Reader
No
Radio
No
Fast Charging
No

Fast Charging

The fast charging feature allows the headphones to gain sufficient autonomy with just a few minutes of charging, ideal for use when time is limited.
High-Resolution Audio
No
Connection with 2 Devices
No
Noise Cancellation
Without

Noise Cancellation

The method of reducing external noise that headphones have.

Top Specs

Connectivity
Bluetooth
Noise Cancellation
-

Noise Cancellation

The method of reducing external noise that the headphones have.

Active Noise Cancellation (ANC): Uses technology to detect and neutralize external noises, offering clearer sound.

Passive Noise Cancellation: The shape and materials of the headphones naturally reduce external noises, improving the listening experience.

Important information

Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.

Reviews (13)

3.6
13
3.6
Review this product
  1. 5
  2. 2
  3. 2
  4. 3
  5. 1
Review this product
  • Weight
  • Sound quality
  • Comfort
  • Bass
  • Noise isolation
  • Value for money
  • Construction quality
  • Evelina_Papp
    5
    Evelina_Papp
    This review is about the colour: Black

    Awesome!! I had bought them before and back then they cost €50 and now half that, but they are worth it. The one with the microphone doesn't work on many headphones, especially wireless ones, but they are convenient!!

    Translated from Greek ·
    Did you find this review helpful?
  • herku1004167
    3
    herku1004167
    This review is about the colour: Black

    Very good sound and convenient setup for their price. Convenient that they fold for transport. The battery is large enough so you don't have to think about it much. The microphone doesn't work very well, it sounds like it's coming from a well. With the phone in hand, very good connectivity, however, it often loses connection outside the house. They always act up when I pass under power lines or trolley wires. Also, as other users have pointed out, it has a short range, resulting in disconnection if you turn your head the other way or carry the phone in your left pocket. There is also an annoying rhythmic noise from the left earphone. Imperceptible during normal listening but very annoying during low volume playback or silent intervals in movies. You can definitely find better products at this price now.

    Translated from Greek ·
    Did you find this review helpful?
  • mfroudaraki
    5
    mfroudaraki
    This review is about the colour: Red

    The earphones are very nice, with good sound, bass and I consider them very good for their price!

    Translated from Greek ·
    Did you find this review helpful?
  • Konstantinos_TGR
    4
    Konstantinos_TGR
    This review is about the colour: Black

    I have had them since 2019 and they still work, only the cushions have worn out. They have good sound for their price with good bass. The Bluetooth gets interference if you move away.

    Translated from Greek ·
    • Sound quality
    • Bass
    • Weight
    • Value for money
    • Noise isolation
    • Comfort
    • Construction quality
    Did you find this review helpful?
  • Fido_Dido79
    2
    3 out of 3 members found this review helpful
    Fido_Dido79
    This review is about the colour: Red

    I have had them for over a year. The positives are that they have lasted until now, the sound is loud and clear, and the bass is fine.
    The negatives are that the microphone practically never worked and the Bluetooth, when in an environment with few interferences, gives up.
    It is impossible to walk a long distance and listen to music, it will immediately cut off, freeze, and stop.
    If a taxi passes by you 7 times out of 10, it will interrupt. If the phone is in the opposite pocket from the receiver of the headphones, 9 times out of 10, you will not be able to listen to your music without interruptions. If you turn your head, even slightly, it will immediately pause. Overall, the Bluetooth has issues.

    Translated from Greek ·
    • Noise isolation
    • Comfort
    • Weight
    • Bass
    • Sound quality
    • Value for money
    • Construction quality
    Did you find this review helpful?
  • katerinakikiki
    2
    3 out of 6 members found this review helpful
    katerinakikiki
    This review is about the colour: Black

    They constantly have sound interruptions, it's annoying from the day I bought them, I don't know. Maybe it's the Bluetooth or something else? I do not recommend them. I bought them because they were wireless but they are very bad. They are not worth even 25 euros that I paid for them. I have wired ones with a 15 euro offer from Genesis Gaming that I have been using for 3 years and they have perfect sound and bass. I don't know if I got a defective one.

    Translated from Greek ·
    • Weight
    • Bass
    • Sound quality
    • Noise isolation
    • Comfort
    • Construction quality
    • Value for money
    Did you find this review helpful?
  • Marina oops
    5
    3 out of 3 members found this review helpful
    Marina oops

    It is definitely value for money. I have had them for 2 years and they work perfectly. They are comfortable, have good sound, and their bass is very powerful. Their construction is not so sturdy (plastic), which is why they are also lightweight, but personally, it did not create any problems for me, with a little care, they will not break. The cable is durable and connects directly to the mobile, as well as the direct connection via Bluetooth. The only negatives I can point out are its average battery life and its microphone, which is characterized as average to poor. However, let's not forget that we are talking about headphones worth 20-25 euros. I would definitely buy them again.

    Translated from Greek ·
    • Sound quality
    • Bass
    • Comfort
    • Weight
    • Value for money
    • Noise isolation
    • Construction quality
    Did you find this review helpful?
  • Γιαννης χαλαρης
    5
    1 out of 1 members found this review helpful
    Γιαννης χαλαρης
    This review is about the colour: Red

    Very good headphones, they are worth their money. I have had them for 1.5 years and I use them every day, very loud and overall good quality and good battery life!

    Translated from Greek ·
    • Sound quality
    • Bass
    • Noise isolation
    • Comfort
    • Weight
    • Value for money
    • Construction quality
    Did you find this review helpful?
  • geo.ma10
    1
    4 out of 8 members found this review helpful
    geo.ma10
    This review is about the colour: Black

    They would be good headphones for their price, if they didn't break so easily a piece that cannot be fixed and you need glue.
    No, I didn't misuse them and I took care of them. And then they tell me that they don't have spare parts in the company and they can't fix them for me.

    Translated from Greek ·
    • Sound quality
    • Comfort
    • Weight
    • Bass
    • Noise isolation
    • Construction quality
    • Value for money
    Did you find this review helpful?
  • 5
    Marios_Sim5534
    This review is about the colour: Black

    They are very good for their low price

    Translated from Greek ·
    Did you find this review helpful?
  • 2
    apol5142

    Verified purchase

    This review is about the colour: Black

  • 4
    Eirini_Gialouri

    Verified purchase

    • Noise isolation
    • Construction quality
    • Sound quality
    • Bass
    • Weight
    • Value for money
    • Comfort
  • 3
    sp.kwnstantinos
    This review is about the colour: Black

    • Comfort
    • Weight
    • Bass
    • Noise isolation
    • Construction quality
    • Sound quality
    • Value for money
  • Evelina_Papp
    5
    Evelina_Papp

    Awesome!! I had bought them before and back then they cost €50 and now half that, but they are worth it. The one with the microphone doesn't work on many headphones, especially wireless ones, but they are convenient!!

    Translated from Greek ·
    0
  • herku1004167
    3
    herku1004167

    Very good sound and convenient setup for their price. Convenient that they fold for transport. The battery is large enough so you don't have to think about it much. The microphone doesn't work very well, it sounds like it's coming from a well. With the phone in hand, very good connectivity, however, it often loses connection outside the house. They always act up when I pass under power lines or trolley wires. Also, as other users have pointed out, it has a short range, resulting in disconnection if you turn your head the other way or carry the phone in your left pocket. There is also an annoying rhythmic noise from the left earphone. Imperceptible during normal listening but very annoying during low volume playback or silent intervals in movies. You can definitely find better products at this price now.

    Translated from Greek ·
    0
  • mfroudaraki
    5
    mfroudaraki

    The earphones are very nice, with good sound, bass and I consider them very good for their price!

    Translated from Greek ·
    0
  • Konstantinos_TGR
    4
    Konstantinos_TGR

    I have had them since 2019 and they still work, only the cushions have worn out. They have good sound for their price with good bass. The Bluetooth gets interference if you move away.

    Translated from Greek ·
    0
  • Fido_Dido79
    2
    Fido_Dido79

    I have had them for over a year. The positives are that they have lasted until now, the sound is loud and clear, and the bass is fine.
    The negatives are that the microphone practically never worked and the Bluetooth, when in an environment with few interferences, gives up.
    It is impossible to walk a long distance and listen to music, it will immediately cut off, freeze, and stop.
    If a taxi passes by you 7 times out of 10, it will interrupt. If the phone is in the opposite pocket from the receiver of the headphones, 9 times out of 10, you will not be able to listen to your music without interruptions. If you turn your head, even slightly, it will immediately pause. Overall, the Bluetooth has issues.

    Translated from Greek ·
    3
  • See all
15,90 €
14,00 €   shipping cost