HUD can display driving datas on the front windshield such as speed, RPM, water temperature, voltage, etc. on the car front window gla. The driving information can be read instantly by the driver, and keep a perfect state on the way with HUD. Avoids the danger of the driver looking down at the dashboard, which ensures the driver's safety and helps the driver stay in top condition.Features:Multifunctions: speed, RPM, water temperature, voltage, fuel consumptionengine speed, driven distance display.Alarm: overspeed alarm (single-stage alarm/four-stage alarm), exceive water temperature alarm, fatigue driving reminder, over-low voltage alarm, speed alarm, fault code detection, fault code elimination.3.8-inch large-screen metal nanotechnology. The front adopts metal nanotechnology to eliminate unneceary reflections and make the picture more clear.Automatic brightne adjustment. Strong light makes it pretty clear in the sunny day,rainy day.GPS system: GPS flashing is in the state of searching for stars. Please move the car to an open road. After the satellite is found, the GPS light stops flashing and stays on for normal use.PC material, high and low temperature resistance.Specifications:Item type: Car HUD DisplayModel: M16Material: ABS+pcScreen size: 3.8inchEnvironment temperature: -40~+80Environment voice: <=60dBWork voltage:11V~16Vdc(12Vdc/400mA)Reflector transmittance: 98%Item size: 90x53x26mmPackage weight: 230gPackage size: 14.3*9*5.1cmPackage list:1 * Car HUD Display1 * GPS cigarette lighter1 * Reflective film1 * Manual1 * Non-slip mat Feedback: We maintain high standards of excellence and strive for 100% customer satisfaction! Feedback is very important. We request that you