Specification Brand : Generic BulletPoint1 : Real data from OBD 2 Port, Display Car Speed, water temperature, Oil temperature, voltage, fuel consumption, RPM, single mileage, total cumulative mileage, driving time, system time, intake pressure, air-fuel ratio, pressure(if your car engine has no turbo funtion, then this function will be invalid), intake pressure,speed up test, brake test, read data stream. Engine Faulty number BulletPoint2 : Alarm for: Overspeed alarm,High water temperature , Low voltage, Engine fault, BulletPoint3 : Smart Fuctions: Clear fault code, Switching between kilometer and miles, and Fahrenheit . BulletPoint4 : 【Multiple functions】: Ambient decorative lighting Engine RPM Fault code alarm Fatigue driving alarm .The Alarm Light sensor: HUD can automatically adjust the brightness "according to the environment .Speed unit: KM/H, MPH .Multi-function zone: speed,water temperature,battery voltage,driving distance Water temperature ,voltage. ExternallyAssignedProductIdentifier : 9446289136688 ItemName : M7 hud obd2 head up display OBD2 + GPS Dual System head up display gps Overspeed car head display up obd2 hud display car ItemPackageQuantity : 1 ItemTypeKeyword : vehicle-overhead-video Manufacturer : Lifyn2 Material : Glass NumberOfItems : 1 PartNumber : 1005003189886850 ProductDescription : OBD mode working voltage: 11V~18VDC (12vdc/200ma), when voltage is higher than 24v, please use a USB cable for GPS mode This product is a dual system (OBD+GPS): push left the wave button to choose OBD or GPS system, if you have no operation, after 5 seconds,HUD will automatically enter into the OBD system. For second use, when HUD start, if donnot push the wave button, after 5 seconds, HUD will automatically enter into the system that first time chose. HUD Display Packing 1x M7Head Up Display 1 x Non-slip mat 1 x Reflective film 1 x OBD Cable 1 x USB Cable 1 x English User Manual ProductSiteLaunchDate : 2022-08-26T08:01:39.726Z UnspscCode : 41110000