Hands-Free Speaker Phone Operation Caller ID Display Two-Way Recording And Playback, 30 Minutes (15 Records Max.) 255 Phone Book Entries Bluetooth 2.0 Specification Encrypted Security Link (Point to Point) Up to 10 Meter Operation Range Can be Paired with up to 8 Devices (one at a time) 9 Hour Talk Time/ 90 Hour Standby Time Call List Dial List 7-Level Volume Up / Down Switch One Touch Answer/End Call Button Noise Reduction Echo Cancellation LCD Display With Backlight Dialing Keypad With Backlight Powered By Car Charger/Built -In Ni -MH Battery Flexible Windshield Stand With Vacuum Suction (3x) Metal Dash Mount Stand ( Included ) External Microphone ( Included ) Auto Connection To Bluetooth Mobile Phone Call Waiting Portable Conferencing Unit Dimensions: 6''W x 2.25''H x 1.25''D (Unit Itself)