Specifications: 1. Measuring the distance by radar and digital display 2. Alarm by Bi-Bi sound 3. Car hands free kit 4. Recording and playing the talk you have just made in the call 5. Guarding against dizzy light and fog 6. All kinds of sensor colors and styles are available 7. High quality and easy to install Technical: 1. Rated Voltage: 12V DC 2. Detecting Distance: 0.4~ 2.0m 3. Display mode: digital LED 4. Working Temperature: -30~+70`C 5. Output speaker power: 0.5W 6. Microphone sensitivity: 60+-2DB 7. Record time: 40s