Combine the convenience of a portable handsfree with the pleasure of FM stereo. Receive and end a call with the push of a BUTTON when using any cellular phone with a 2.5mm jack. (Including: V60, V66. T720, V70, V120, StarTac phones, Nextel phones, etc...) Powered by an AAA battery. (Not Included) Handsfree operation can be used with the above mentioned phones and including V8088, V3688, V988, T190 & T191.