Great Compatibility: This HUD is GPS + Beido dual-mode chip. It is compatible with all vehicles around the world. The refresh rate is 10 frames per second.
Display Function: This HUD can diplay speed, clock, driving time, driving distance, number of satellite, driving direction.
Compact Design: The compact body suitable for placement. No matter where it is placed, it is clear and natural, and dose not block any sight.
Two Alarm functions: It supports overspeed alarm and fatigue driving alarm. The over speed alarm setting range is 0-250KM/H. HUD will alarm when the vehicle speed reach to the setting value.
Automatic light adjustment: It can adjust its own brightness according to the environment. Clear display, no glare when driving.
Specifications: Color: black Material: ABS Speed unit: KM/H (kilometers) / MPH (miles)  Operating voltage: ≤5V Product size: 12.8 x 3.6 x 2.5cm  Package size: 14.3 x 9 x 5.1cm  Package weight: 140g Packing List: 1 * G2 Head-up Display 1 * Micro USB Cable 1 * Non-slip Mat 1 * English User Manual Usage: Plug and play, easy to install. First, plug the supplied USB cable into your car's cigarette lighter. Then connect the HUD. Finally, place the HUD where you want it to be.