Bluetooth version: V2.1+EDR supports A2DP - Bluetooth profiles: handsfree headset - Frequency: 2.4GHz - Operation distance: max 10 meters - Car charger input voltage: DC 12~24V - 1.5" LCD displays incoming caller name & number - Features phone book function - Parking radar rated voltage: DC 12V - Working voltage: DC 9V~16V - Rated current: 20mA~200mA - Frequency of ultrasonic: 40KHz - Detection distance: 1.8m~0.3m - The distance can display on the monitor screen - Supports BIBI sound alarm - Built-in microphone and loudspeaker - Noise/echo compression technology - DSP technology - FM transmitter included - Can play MP3 music from flash drive or SD/MMC card - Built-in rechargeable lithium battery - Package includes: - 1 x Bluetooth Rearview Mirror (4.8m cable length) - 4 x Parking sensors - 1 x Power cable - 1 x Power box - 1 x Sensor drill - 1 x Adhesive tape - 1 x English manual