The Sonja-wireless hands-free kit fits all mobile phones, from cellular to PCS, and it's the one I personally use on my cell phone; out of all I' ve tested, it's handier, has a stronger antenna and better reception than any others on the market. Its easy to install: Just clip the unit onto the receiver of your phone, tune your stereo to FM88.6MHz or 106.3MHz and make your call. You can talk from anywhere inside the car, so if your're on your way to a meeting with your VP or marketing man, they can join in the conversation too. And here's a real plus--the hands-free unit keeps your head safely away from electromagnetic wave transmissions. The magnetic cell phone holder keeps your phone handy; place it within reach on your car's console near the radio, if you like. Uses one AAA battery.