Features: Bluetooth v2.0 + EDR, compatible with all bluetooth enabled mobile phones. Caller ID indicate with large LED lights, supports english name display. Voice dial and last number redial. Noise suppression and echo cancelation technology. AVRCP profile integrated, control the audio playback when used with Bluetooth USB dongle. Built-in microphone and built-in dual stereo louderspeaker. Built-in FM frequency transmitter connect to your car stereo. Universal audio input for audio devices, such as iPods, MP3, MP4 to enjoy wireless stereo listening. Easy installation, the mirror simply clips over the top of your existing mirror. Phone book for max. 200 address list. Select last 10 calls dial-back from Bluetooth mirror. Specifications: Effective distance between mirror and phone: 8 meters FM transmitter distance: 8 meters Power Consumption (Max. volume, during conversation): 5 W Audio distortion (1 KHz/1000 mv input): 0.3% Audio channel separation (1 KHz): 45 dB Audio S/N (1 KHz/1000 mv input): 50 dB Speaker output power (1 KHZ/1000 mv input, max. volume): 0.5 W Headphone output level (1 KHz/1000 mv input, 32 OHM loading): 0.8 V Mirror Size: 285 x 90 x 24 mm Package Contents: * BCK-03 x 1 pc * Retail Box * User's Manual * Car Charger * Connector Cable * (Optional) Wireless Headset/Built in Battery/Wireless Parking Sensor