Univeral 3 Inch Screen Car HUD Head Up Display OBD II With Over Speed Warning System Car Safe Guarding

Specifications Display: 3 inch Environment temperature: -40c- + 80c Atmospheric pressure: 86-106KPa Relative Humidity: 10% -95% environmental noise: <= 60dB (A) Alarm sound level: =dB (A) Working voltage: 5V ~ 24V DC (12V DC / 400mA) GPS: Yes Speed Alarm: Yes BAT Alarm: Yes Product size: 10.7* 5.7* 2cm/ 4.2* 2.2* 0.8in Product Weight: 55g/ 1.9oz Package Size: 14.6* 8.8* 4.8cm/ 5.7* 3.5* 1.9in Package Weight: 185g/ 6.5oz Description The main function is to display the car dashboard information(e.g.speed, driving direction, local time, driving distance, driving time ), and keep the driver's eyes always on road to avoid the dangerous of lowering down head to read the dashboard. Features 1, Widely used for all the vehicles such as cars, SUV, truck, ect. 2, Easy Installation, plug and play. 3, Multi function display or simple function display can be switched freely, the language can be changed. 4, Rich Contents: driving speed, voltage, single driving distance, total driving distance, driving time, over speed alarm, freely switch between kilometers&miles. 5, New functions: accelerating competitive mode & brake performance test & light sensor.