RAD2000 Compact Size Vehicle FlowSpeed Measurement Device Portable Car FlowVelocity Detector Accurate Car Driving Speed Tester

Features:
Built in Chinese, English, and Russian language switching.
Real time driving speed measurement, quick measuring speed, and high accuracy.
Sound signal strength level indication, special tone provides signal strength and frequency band recognition.
Multi mode warning selection, urban area, highway, mute, automatic mute mode switching.
Intelligent frequency conversion, strong anti-interference performances.
Compact in size, it doesn't affect your driving, and it's easy to install.