I hope this is not a defect from my Jabra A120s since I didn't see other reviews complaining about this matter...Yes, the adapter works great if you're sitting in front of your computer or in a bus. But if you're like me and you like to listen to music while jogging or biking then don't buy this adapter!What happens is that with the movement of your body, the adapter keeps losing its connection to my Jabra BT620s Headset. If you're listening to music that's not so bad - just irritating. But if you are listening to a podcast you just lose the trend of thought...It's so frustrating that I had to come here and write this review... I'm hoping somebody else shares their experience with this adapter while practising sports.