Name: Bluetooth Visual Parking Sensor with Reverse Camera(Desktop) blue tooth car kit Calendar, time and temperature can be displayed any time during driving. After paring with a Bluetooth mobile phone, incoming calls can be directly displayed on the screen, allowing hand-free answering, rejecting and making calls to ensure driver safety. Display active and standby options are provided. The display is also a monitor to know conditions behind you car. During reversing, the display is automatically converted to show images behind the car, in addition to digital and band display as well as true voice distance alerting (or beeps). Mute and voice options are provided. TypeBluetooth parking sensorDisplayThin-Film Transistor displaySpecifications3.5-inDisplay exterior dimensions265.5×78.5×34Camera1/3" OV7910 CMOSInstallationAttached outsideCamera dimensions34×28.6×30.2Installation adjustment width58 77mmSensor typeUltrasonicSensor dimensionsφ22Nos of Sensors4Working voltage12VDCWorking voltage rangeDC10V 15VMax current under rated voltage0.31AMin current under rated voltage0.28AMaximum power<5WAmbient temperature-35 +70Detection range0.3m 2.5mAlert volume70dB 80dBwarrantyone year