I recently purchased the Jupiter Jack. It operates perfectly on 99.3 or 101.3. Mine arrived with the Six adapters and in the event that they do not match your cell phone, you can find extra just get through the manufacturer for only a delivery charge of $2.99. The audio is crystal clear. I have spoken with my girlfriend using the Jupiter Jack even while crusing with the windows down and cars passing by but she claimed she couldn't notice the distractions. It's also possible to use it in your home using your stereo system. Therefore i would claim if you would like an economical way to speak hands free the Jupiter Jack is the best product on the market. -Ed, Texas
When California banned handheld cell phone use while driving, I bought the Jupiter Jack online. Not only can I take legally calls while driving, but my driving has improved as well. No tickets in 2009! -Jennifer, San Fransisco
It's so easy to use, yet costs a fraction of those clunky bluetooth headsets. What a sweet deal! -Cody, Arkansas
I never beleived those TV commercials until I got the Jupiter Jack as a Christmas present. Outstanding product! -Laura, Vermont