The sound quality is really very bad... Firstly, when you increase the volume from a certain level and above, you can't hear anything... The bass is terrible and I really don't understand why these headphones have such high intensity when you can't hear anything and you have to lower the volume to be able to hear... Maybe the worst purchase I have ever made for headphones... Not to mention that in some songs, you have to lower the bass so that the sound doesn't stop.

1. Very good sound.
2. Connectivity from inertia in 2-3 seconds (I do not evaluate it as negative).
3. Long talk time.
4. Performance in music and speech.
5. Very, very sensitive wiring, which causes one earphone to become inert relatively quickly.
6. Due to cost, I have bought two pairs to have an alternative

Unfortunately, in the 2 pieces I got, one just got humid as soon as I sweated and only changed the songs and eventually broke completely, and the 2nd one doesn't work properly with its microphone.. 2 out of 2 broken.

From the most convenient BT headphones available. On the bike with the helmet, you don't fear it falling off and losing it. The volume is more than satisfactory. Also, the person you're talking to doesn't realize you're on the move at 30mph, they hear you so well.
Edit: Unfortunately, both pairs I bought had a problem in less than a month... One doesn't pick up your voice, and the other gets moisture when you sweat and the buttons don't respond, or it changes songs on its own... Such a shame.