Features: Easy to install and use, directly plug and play. Support USB, AUX or AUX MIC-input adapter ( USB support up to 8GB not included ) bluetooth-compatible handfree function ( AD2P ) Answer or reject call phones by press track +/-. Integrated bluetooth-compatible car Interface adds Hands Free Calling and Wireless Audio to the original factory stereo of many car. The system comes with built-in bluetooth-compatible and microphone. Use your phone in the car hands free (HFP), stream your music from your phone to the factory stereo via bluetooth-compatible Audio playback (A2DP). Specifications: Material:Plastic Size:Approx.7x4.5x1.5cm/2.75x1.77x0.59inch Color: Black Standby Current: 3mA Operational Current: 300mA Total Harmonic Distortion: Less than 0.05% SN Ratio: 90dB Voltage-input: 11V-14.6V Supporting decoding format: WAV /MP3/FLAC (lossless format). Support external connection: 1 USB2.0 /AUX Bluetooth-compatible version: 5.0BR/EDR-(including compatible version-below 5.0) Distortion: < 0.05% Standby power consumption: > 0.1W Working power supply: DC11-15V (generally from the host computer, no external power supply is needed). USB output: DC5V/300mA. Working temperature: -20~70 Frequency response: 20-20KHz For Honda-Accord Civic-CRV Note: .Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. .Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings. Package includes: 1x Module Unit 1x Wire Harness 1x Mic-Cable