I bought this to use while swimming at the local pool. I've been using it for over 4 weeks now. For some reason my review wasn't published so I'm updating it. I read all the negative reviews and expected something to happen now. My headset still works. I charged it a couple of times but only because I didn't want to completely drain the battery. I used part of the MP3 player and FM radio and checked the Bluetooth functions. Bluetooth works like every other kit I have, I just haven't tested the range. The FM radio function is good for radio stations with a strong signal and you need a phone app to search for radio stations before using it. The disadvantage of the FM part is that you cannot manually enter the frequency of a station or delete frequencies that you want to skip or frequencies with a weak signal. But there is a local FM player if you need it. I found it manageable, although I had a hard time getting my favorite station to scan. The MP3 player part is what I used the most while sailing. There are several options: you have to play all songs, switch between selected songs and loop a song. This was not clearly explained and was only found when the "Forward" button was pressed for 1 second. You also have the option to create playlists from your uploaded files. I found that in order for the headset to play a playlist, you have to select the playlist in the app and choose the name of the first track in the playlist. There is another game I want to make with it. It would be a little better if setup didn't have to be done through the app, but it only takes a few minutes each time I put it on. I had an issue with a few songs behaving like they weren't being tracked properly. I'll have to do some more testing on these two songs to see if it's a bad recording or a memory issue causing the music to skip. I've currently uploaded about 800 million music, so there's still plenty of room for experimentation. My experience with the storage shows that the higher the usage percentage, the more problems I have. I will monitor performance and update in a few months. But I'm happy with the performance and enjoy the many uses.
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