The third one I am getting, average lifespan with heavy use 3 years, until one of the buttons breaks / sticks ... (there is room for improvement there)
Otherwise, in terms of ease of use, sound, battery capacity, and all in one ....
if you get used to them, it's hard to change afterwards

I have bought these headphones twice! In one and a half years, they broke! Specifically, the left earphone broke both times, resulting in no sound coming out of it at all in the end! I think they should have lasted longer for the money! I used them almost every day! I used them while running, where they really helped me, to be honest! However, I was disappointed that they broke both times in one and a half years!

The first pair I bought lasted for a year. I used them occasionally in the pool with the special buds. The sound is lower in the pool because the special buds are blocked. I bought a second pair that I haven't used in water, I've had them for 4-5 years now without any problems. They are very convenient, ideal for running. The battery is very good and charges quickly. I am impressed with the sound, very good reproduction for such a device with good bass and treble (I am also involved in music). Try to take care of them and clean them to make them last. They are a bit pricey at this price. They don't have a radio as the description says. Nor do they have a memory card, the memory is built into the player. The microphone is not for taking calls but for the "Ambient Sound Mode" function.

See the manual here:
https://docs.sony.com/release/help_4580541121.pdf

Their maximum intensity is ridiculously low, after a few months that I went to put them on (I only wear them when I go to the sea) they wouldn't open, I took them for repair and because the warranty had expired for ten days they told me that they cannot be repaired nor can I change them... Unacceptable for 90€....

The sound quality when used in the pool is not very satisfactory as they do not fit well in the ears. Satisfactory battery life.

I bought them in 2017 and they broke in June 2022 with a lot of use in the sea and in the pool almost on a daily basis in the last year. At first, I couldn't change the part and now it doesn't charge. I believe he got his money's worth. Many write that it broke in 1 to 1.5 years. It didn't happen to me, no doubt I will buy the same for the following reasons. 1. Because they lasted me 5 years!! 2. They have a very good fit, no matter what you do, you don't need to fix them, they stay in place and never bothered me, 3. The capacity is satisfactory for pieces, but not for larger files. 4. The sound is decent. The volume could be louder, but let's not make it a big deal, the quality of the file also matters. 5. Indeed, it has good autonomy and charges quickly. 6. It is easy to use. 7. It is discreet in appearance. Girls, the hair is fine on top, you can't even tell.
I highly recommend it for swimming but also for general use.

Poor sound quality.
After 1.5 years, the buttons stopped working. I couldn't skip to the next song and then I couldn't increase the volume.
Now it doesn't charge anymore.

After 1.5 years of use, the right earphone broke.... I was disappointed because I expected something better for the money I spent. If it hadn't broken, I would have been satisfied overall as it was very convenient for activities such as running and swimming.