UniversalCompatible with all cars, trucks, motorcycles and bicycles. Use the calculation guided by the GPS signal. No wiring needed to VSS (vehicle speed signal). Plug andamp; Head-up display of driving speed, calculation and display of driving time and mileage, easy setup - Plug andamp; Play - Powered via vehicle cigarette lighter. No professional installation required. DisplayMPH or KM/h display, automatic brightness adjustment via sensor for day and night riding. Vehicle driving speed display. Green color speed display, easy on the eyes. Overspeed alarm setting. Display of total mileage after stopping the car. Altitude display. Model C80; Color : Black ; Material : ABS+PC; Cut : 105*16*60mm; Screen size: approx. 101 x 55 mm; Input voltage: DV5V; Input currentDC 50-120mA Overspeed alarm1. Set the overspeed alarm rate (as described in the IV Operation Guide)2. Three times inchBeepinch sound alarm will be triggered when overspeeding.3. No more alarms will be triggered when overspeed is detected Features: 1) Head-up display of driving speed. 2) Calculation and display of driving time and mileage. 3) Easy Installation - Plug andamp; Play - Powered via vehicle cigarette lighter. No professional installation required. 4) Compatible with all cars, trucks, motorcycles and bicycles. Use GPS signal guided calculation. No wiring needed to VSS (vehicle speed signal). Display MPH or km/h. Automatic brightness adjustment by sensor for daytime driving and at night. 7) Vehicle speed display. Green color speed display, easy on your eyes. 8) Overspeed alarm setting. 9) Total mileage display after car stop. 10) Speed display altitude. Product Parameters: Color: Black. Material: ABS + Polycarbonate. Dimensions: 105*16*60mm. Screen size: approximately 101 x 55mm. Input voltage: 5V DV. Input current: DC 50-120mA. User Guide Included: 1. Set the overspeed alarm rate. 2. Set display mode 3. Set speedometer unit (km or mile). 4. Driving data display. Driving fatigue alarm. Overspeed alarm: 1. Set the overspeed alarm rate (as described in the IV operation guide) 2. Three times beep sound will be triggered when over speeding. 3. No alarm will be triggered when overspeed is detected continuously. Contents: 1 GPS Speedometer. 1 USB Cable. 1 x Installation Accessories. 1 Manual of use (English language not guaranteed).