BT Interphone + Handsfree Bluetooth for Motorcycle / Skiing Helmet (7-Hour Talk / 2000M-Range)

Pros: This came with two kinds of attachments available for the helmet. Glue or clamp. I used the clamp and it worked fine for me(my helmet was not perfect for it but still was fine.) When people hear you from the microphone, they cannot hear the wind at all. The speakers are very loud and relatively clear. Battery was great, I use it for a week without recharging.

Cons: Antenna cover fell off after a month of use. This will be a problem only when it rains, I guess. My biggest problem was the microphone. I am a big man and have a big neck and most of the time I cannot get the microphone properly on my neck so people cannot hear me at all. So maybe this is for thinner/smaller people. When used with gloves it's sometimes hard to know which button you press, and volume is harder to press.

Other: Good value for price. Not for wide necks/big people.

Pros: Pairs with HTC One X no problem, after it is paired it shows up with two options "phone audio" and "media audio". Decent quality construction. Includes multiple mounting options. The speakers include velcro mounts which fit very well in my XL motorcycle helmet.

Cons: The microphone is weird, I put it on briefly and the buds(?) sat directly on my jugular veins cutting off the circulation slightly. My neck is about 15-inches around, would probably be good for a smaller person or child.

Other: Comparable name brand units even for audio only are more expensive, the unit works for what I need after slight modifications, so I'm happy with it.