Size Name: 3.55 x 1.97 x 0.47inch 
Output Frequency: 9-16V 
Item Type: projector on the windshield 
Item feature: GPS speedometer, HUD display car 
Safer Driving: Prevents you from lowering head to the dashboard, just concentrate on the road ahead for speed or driving data. 
Over-speeding Alarm: Alerts you if you exceed the speed limit by setting over-speed buzzing alarm. 
Multi-color High Definition Display: Simple to read. 
Adopted Nano-technology: Eliminates unwanted reflection to present more definition frames. 
Display Rich Contents: Speed, engine rpm, water temperature, voltage, mileage, shift reminding, driver fatigue reminder, low voltage alarm, high water temperature alarm, over-speeding alarm, engine fault alarm, fault code elimination. 
Brief Projection: The frames are so brief that you can easily grasp very important data, naming speed, some alarms, and engine rpm. 
Auto Switch: Automatically turn on and off in accordance with the car engine, which will effectively protect the car battery. 
Auto and Manual Brightness Adjustment: Automatically adjusts its brightness to provide clearly visible projections both in direct sunlight or at night.