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Lemfo HK4 46mm Smartwatch with Pedometer Heart Rate Calorimeter Sleep Monitoring Waterproof Black
Smartwatches

Lemfo HK4 46mm Smartwatch with Pedometer Heart Rate Calorimeter Sleep Monitoring Waterproof Black

The Lemfo HK4 Smartwatch is a modern companion for monitoring your fitness and health. With advanced features and a stylish appearance, this smartwatch is suitable for everyday use.

It supports...

The Lemfo HK4 Smartwatch is a modern companion for monitoring your fitness and health. With advanced features and a stylish appearance, this smartwatch is suitable for everyday use.

It supports connection with smartphones running Android, providing flexibility in the choice of devices you can use. Bluetooth connectivity allows you to connect the watch to...

See full description See full description

  • Battery Life

    Battery life shows how many days the smartwatch can operate without charging.


    It depends on the battery capacity, but also on how much you use it (e.g. active display, GPS, notifications, etc.).


    For example, a smartwatch with 2-3 days of battery life is ideal for daily use with all features enabled.


    Models with 5–10 days or more are suitable for those who do not want to charge often or use it more "lightly".


    The value is especially meaningful when comparing products from the same manufacturer.

  • Display Type

    AMOLED

    Advanced OLED screen type with better visual experience, almost perfect black performance, thin and light but with higher energy consumption than Super AMOLED.

  • Waterproof

    Water Contact

    The smartwatch is designed to withstand simple contact with water, such as rain droplets or sweat. It is the ideal choice for daily use, offering safety and functionality even in wet conditions.
  • See all
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Product report

Description

Description

The Lemfo HK4 Smartwatch is a modern companion for monitoring your fitness and health. With advanced features and a stylish appearance, this smartwatch is suitable for everyday use.

It supports connection with smartphones running Android, providing flexibility in the choice of devices you can use. Bluetooth connectivity allows you to connect the watch to your mobile phone, as well as other supported devices such as wireless headphones.

The watch features numerous sensors that enable the recording of your physical activity:

  • Pedometer for tracking steps and distance.
  • Calorie counter that calculates the calories you burn daily.
  • Heart rate monitor for tracking your cardiovascular health.
  • Oximeter that measures the oxygen level in your blood.
  • Sleep monitoring function that analyzes the quality of your sleep.

The watch's screen is a 1-inch touch display based on AMOLED technology, which offers vivid colors and high contrast, making it ideal for daily use. The OLED technology is more energy-efficient, ideal for longer battery life.

This particular smartwatch is suitable for contact with water, such as raindrops or sweat, allowing use even in wet conditions without worry.

Whether you are active or just want to monitor your health, the Lemfo HK4 is a reliable choice to accompany you every step of your day.

Manufacturer

Manufacturer Details

Warnings & Safety Information
See full description

Specifications

Specifications

Technical Specifications

Colour
Black
Release Date
-
Screen Size
1 "

Screen Size

"The design and size of the casing affect how each screen size appears on the wrist. Most smartwatches have screens of 1.4-1.5 inches."
Screen Resolution
-
Screen Type
AMOLED

Screen Type

AMOLED

Advanced OLED screen type with better visual experience, almost perfect black performance, thin and light but with higher energy consumption than Super AMOLED.
Compatible Operating System
Android

Compatible Operating System

The smartphone must be compatible with the watch. Apple Watches only connect with iPhones, while some others can connect with both Android and iPhones, but some functions may not be fully supported.
Touch Screen
Yes
Connection
Bluetooth

Connection

Bluetooth
The basic way to connect your smartwatch to your mobile phone and other supported devices, such as wireless headphones.
Strap
-
Case material
-

Features & Functions

Features & Functions
-
Use
Casual Use

Use

The smartwatch has the ability to record the corresponding activity and produce relevant statistics.

Additional Specifications

Sensors
Pedometer, Calorimeter, Heart Rate, Oximeter, Sleep Monitoring

Sensors

Pedometer

Recording steps and distance.

Calorimeter

Calculates how many calories you have consumed each day.

Heart Rate

Embedded heart rate monitor.

Oximeter

Measure the amount of oxygen in the blood.

Sleep Monitoring

Recording of heart rate and breathing during sleep and diagnosis of problems according to the product. (e.g. restless sleep, lack of deep sleep, etc.)
Protection
-
ATM Rating
-

ATM Rating

The ATM rating on smartwatches indicates their level of water resistance, which tells how well the watch can withstand exposure to water and various pressure levels.

3 ATM (30 meters): Suitable for everyday splashes, rain, and hand washing.

5 ATM (50 meters): Light swimming, showering.

10 ATM (100 meters): Swimming, snorkeling, water sports.

15 ATM (150 meters): Advanced swimming, water sports.

20 ATM (200 meters): Diving, deep water activities.

50 ATM (500 meters): Professional diving, excellent water resistance.
Waterproof
Water Contact

Waterproof

Water Contact

The smartwatch is designed to withstand simple contact with water, such as rain droplets or sweat. It is the ideal choice for daily use, offering safety and functionality even in wet conditions.
MIL-STD-810
No

Battery

Battery Capacity
260 mAh

Battery Capacity

Most smartwatches have a battery capacity of around 200mAh. 2. The size of the battery is not always indicative of the autonomy, as this largely depends on the features of the smartwatch and the functions we have active. 3. For example, a smartwatch with a large color touch screen and 24-hour heart rate monitoring will often require charging even if it has a larger battery than a simpler smartwatch.
Battery Life
7 days

Battery Life

Battery life shows how many days the smartwatch can operate without charging.


It depends on the battery capacity, but also on how much you use it (e.g. active display, GPS, notifications, etc.).


For example, a smartwatch with 2-3 days of battery life is ideal for daily use with all features enabled.


Models with 5–10 days or more are suitable for those who do not want to charge often or use it more "lightly".


The value is especially meaningful when comparing products from the same manufacturer.

Dimensions

Case Size
46 mm

Case Size

46
This size is usually intended for fruits with a circumference of 19-20.5cm.
Weight
-

AI Features

AI Voice Assistant
No
AI Training Coach
-
AI Health Insights
-

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

Description & Specifications

The Lemfo HK4 Smartwatch is a modern companion for monitoring your fitness and health. With advanced features and a stylish appearance, this smartwatch is suitable for everyday use.

It supports connection with smartphones running Android, providing flexibility in the choice of devices you can use. Bluetooth connectivity allows you to connect the watch to your mobile phone, as well as other supported devices such as wireless headphones.

The watch features numerous sensors that enable the recording of your physical activity:

  • Pedometer for tracking steps and distance.
  • Calorie counter that calculates the calories you burn daily.
  • Heart rate monitor for tracking your cardiovascular health.
  • Oximeter that measures the oxygen level in your blood.
  • Sleep monitoring function that analyzes the quality of your sleep.

The watch's screen is a 1-inch touch display based on AMOLED technology, which offers vivid colors and high contrast, making it ideal for daily use. The OLED technology is more energy-efficient, ideal for longer battery life.

This particular smartwatch is suitable for contact with water, such as raindrops or sweat, allowing use even in wet conditions without worry.

Whether you are active or just want to monitor your health, the Lemfo HK4 is a reliable choice to accompany you every step of your day.

Manufacturer

Manufacturer Details

Warnings & Safety Information

Technical Specifications

Colour
Black
Release Date
-
Screen Size
1 "

Screen Size

"The design and size of the casing affect how each screen size appears on the wrist. Most smartwatches have screens of 1.4-1.5 inches."
Screen Resolution
-
Screen Type
AMOLED

Screen Type

AMOLED

Advanced OLED screen type with better visual experience, almost perfect black performance, thin and light but with higher energy consumption than Super AMOLED.
Compatible Operating System
Android

Compatible Operating System

The smartphone must be compatible with the watch. Apple Watches only connect with iPhones, while some others can connect with both Android and iPhones, but some functions may not be fully supported.
Touch Screen
Yes
Connection
Bluetooth

Connection

Bluetooth
The basic way to connect your smartwatch to your mobile phone and other supported devices, such as wireless headphones.
Strap
-
Case material
-

Features & Functions

Features & Functions
-
Use
Casual Use

Use

The smartwatch has the ability to record the corresponding activity and produce relevant statistics.

Additional Specifications

Sensors
Pedometer, Calorimeter, Heart Rate, Oximeter, Sleep Monitoring

Sensors

Pedometer

Recording steps and distance.

Calorimeter

Calculates how many calories you have consumed each day.

Heart Rate

Embedded heart rate monitor.

Oximeter

Measure the amount of oxygen in the blood.

Sleep Monitoring

Recording of heart rate and breathing during sleep and diagnosis of problems according to the product. (e.g. restless sleep, lack of deep sleep, etc.)
Protection
-
ATM Rating
-

ATM Rating

The ATM rating on smartwatches indicates their level of water resistance, which tells how well the watch can withstand exposure to water and various pressure levels.

3 ATM (30 meters): Suitable for everyday splashes, rain, and hand washing.

5 ATM (50 meters): Light swimming, showering.

10 ATM (100 meters): Swimming, snorkeling, water sports.

15 ATM (150 meters): Advanced swimming, water sports.

20 ATM (200 meters): Diving, deep water activities.

50 ATM (500 meters): Professional diving, excellent water resistance.
Waterproof
Water Contact

Waterproof

Water Contact

The smartwatch is designed to withstand simple contact with water, such as rain droplets or sweat. It is the ideal choice for daily use, offering safety and functionality even in wet conditions.
MIL-STD-810
No

Battery

Battery Capacity
260 mAh

Battery Capacity

Most smartwatches have a battery capacity of around 200mAh. 2. The size of the battery is not always indicative of the autonomy, as this largely depends on the features of the smartwatch and the functions we have active. 3. For example, a smartwatch with a large color touch screen and 24-hour heart rate monitoring will often require charging even if it has a larger battery than a simpler smartwatch.
Battery Life
7 days

Battery Life

Battery life shows how many days the smartwatch can operate without charging.


It depends on the battery capacity, but also on how much you use it (e.g. active display, GPS, notifications, etc.).


For example, a smartwatch with 2-3 days of battery life is ideal for daily use with all features enabled.


Models with 5–10 days or more are suitable for those who do not want to charge often or use it more "lightly".


The value is especially meaningful when comparing products from the same manufacturer.

Dimensions

Case Size
46 mm

Case Size

46
This size is usually intended for fruits with a circumference of 19-20.5cm.
Weight
-

AI Features

AI Voice Assistant
No
AI Training Coach
-
AI Health Insights
-

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.