I have one (FM Transmitter that is). Deaf in left ear due to mother having rubella. Right ear is slowly going bad due to age. have worn aids on right side for years (since college) as it really makes a big difference. recently picked up a bicros (left side transmits to right side.) and I almost have stereo sort of... :-) but the transmitter is phenomenal. bluetooth from my iPhone to my pickup that I wear all the time that transmits FM to my hearing aid. Sweet! Also if there is FM transmitter in theater I pickup that as well on my aids. Device for TV to transmit to FM for my pickup and bingo don't have to turn volume up so high it scares the neighbors. technology is amazing. Even works with my iPad. (movies!). GPS on iPhone in car! Oh and my office phone has a bluetooth base station that my transmitter picks up and transmits FM to my aids. I had no idea how much I was missing on phone calls until this came along. I hate phones and hearing aids but this is truly amazing. Phone calls are now like sitting in a nice quiet room all by myself speaking with someone face to face. Even in the bull pen office cubicle space we use at work. IM me if you have any questions. I am not a sales person but I love this product. Back to bike.... I commute daily but do not wear the aids due to wind noise it's much better with new aids but still annoying. am looking into that little wind sock / sweat band thing to cover the aids while riding.