1. The eight core functions simplify the complexity and focus on practicality, and each function is born for your safety 2. The full-frequency mobile speed measurement radar speedometer can receive XK, KA, CT, LASER and other advance speed measurement warnings at a full frequency. The distance is 200-800 meters (accurate speed measurement is 300 meters) to driving safety. 3. All-round depth warning, front and rear scanning effective speed measurement point distance is 800meter in the forward direction, 300meter in the reverse direction, timely warning at any angle, no blind zone in speed measurement. 4. Accurately measure the speed of the car, the LED display allows the driver to know the current driving speed, easy to operate and master the of use 5. Mobile speed measurement and early warning, radar speed measurement, full frequency band without missing frequency band, real voice prompts to from speeding and avoid distress Type:Radar speedometer Model:v7 Measuring range:x/k/ka/ct/Laser Measurement accuracy:300-800 Resolution:led digital display Working voltage:12v (V) Scope of application:universal Colour:Blue Material:Plastic Package Contents: 1 * host 1 * charging cable 1 * anti-skid mat 1 * English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.