I use this regularly while cycling and this is very convenient to use. Fully waterproof and sweat proof. I was apprehensive of purchasing this as I thought the earpiece may be bulky, but it is not a problem at all. Once you put it in your ears, it is hard to feel it is there. The music is very nice. I have tried all kinds of music, songs, psytrance, sitar and it delivers well. Music is very crisp and no jarring. There is a small clip to safely secure it behind your head, so it has not fallen down till now. Also the music is not so overwhelming to drown the road noises, so you can stay alert even while riding the bike. A charge lasts for 4.30hrs, so it lasts me two days before i charge again. Also it charges to full within an hour. I handle the unit very gently, so i have not tested it's ruggedness. However i have tossed it in my bag and things and nothing happened.I don't talk too much on the phone, but the occasional calls have been really clear at both ends. Occasionally the wind noise drowns my voice but once I stop on the side or slow down, it is OK. The Google voice has been a useful addition, as I can just double tap the call button and play music or start navigation. However it is having some trouble recognizing names to dial, through my voice, and once it dialed my brother's Australian number and i had to spend isd rates, but that is purely to do with Google or my voice and not this headset. It is convenient to control the volumes from the unit and skip or repeat tracks.If you listen to music on the road then this is a nice add to your life.

its sure does firmly hold on to my ears , and sound quality is above good, but the ways the controls have been placed on the device and the way it hold on to my ears shows how really cheap the worthless product it is.it just uses some kind of rubber plastic thing (which we ourselves could find/make) to hold on to the ears , and this plastic thing some times falls down too !wish i could have spent a lot more money and bought a real headphones