I've got to say that Dave at RocketMoto is A+ ok with me!! I ordered a single unit of the sena. After it arrived I mounted it to my helmet and it connected with the bluetooth on my phone right away, made a phone call or 2 just to check it out! Since I haven't ordered a bluetooth adapter yet for my ipod or Garmin 2720 I was going to just use the corded 3.5 plug for my music and the jack wouldn't go into the mike set, I tried again and again pushing it in but it wouldn't go in. I called Dave at RocketMoto with my problem and after telling him I was planning on using it for a ride this wk. end he overnited me a replacemant !! HOWS THAT FOR SERVICE!! I Highly recommend RocketMoto for your buisness.