Incorporating sophisticated 'Text-to Speech' software; the Supertooth 3 represents the very latest in Bluetooth sun-visor speakerphone technology. Its outstanding audio quality is a result of advanced Digital Signal Processing software to eliminate noise and achieve echo cancellation, regardless of whether the car is stationary or travelling at high speed. It also adjusts sound levels to compensate for loud engine noise or external noise created when the windows are wound down. The device requires no installation and is quickly and easily installed and connected to your cell phone. Simply slide the metal clip onto your sun-visor and attach the Supertooth 3 via the magnets on the rear of the device. The voice prompts provide guidance and assistance to help pair the device and upload your cell phone's address book. When a call is received, the Supertooth 3 announces the incoming caller's name or number. Simply say 'OK' to accept the call. There is no need to take your hands off the wheel or remove your eyes from the road, making the Supertooth 3 a safer and legal alternative to driving while on the phone. Choice of 6 languages (British English, American English, French, Italian, Spanish and German) DSP Noise Cancellation/Echo Cancellation Full Duplex, high performance speaker Automatic connection and reconnection with notification Digital Volume Control Can also be charged directly from a PC via USB Cable (not included) Fix to the sun-visor via a two sided magnetic clip - no installation costs Supports voice dial activation, redial and call reject Pairs with up to 8 Bluetooth devices Includes 1 x AC Travel Charger Includes 1 x Car Charger BlueAnt 2 Year Replacement Warranty