M60 Description Features: Real-time measurement of the vehicle roll and pitch angle during driving, the range is -40~ +40.The current altitude of your car can be measured.GPS satellite positioning, make sure you don't go in the wrong direction. Perfect for traveling and driving adcentures.Obtain the current driving speed, with over speed alarm function, as well as display the local time.Real-timevoltage monitoring, can avoid safety hazards caused by too high or toolow voltage, prolonging the lifespan of the battery.Suitable for all vehicles, such as vans, trucks, buses, cars, off-road cars, SUVs, and other Vehicles. Plug & Play: 1. Plug the power line into the car cigarette lighter port;2. Connect the power line to the data part;3.Place the device horizontally in a visible position and fix it with 3M glue. Package Included: 1 x Car HUD Specification: Material: ABS+PMMASize: As picture showAccuracy: 2 M50 Description Features: -Real-time measurement of the vehicle roll and pitch angle during driving, the range is -40~ +40.-The current altitude of your car can be measured.-GPS satellite positioning, make sure you don't go in the wrong direction. Perfect for traveling and driving adcentures.-Obtain the current driving speed, with over speed alarm function, as well as display the local time.-Real-time voltage monitoring, can avoid safety hazards caused by too high or too-low voltage, prolonging the lifespan of the battery.-Suitable for all vehicles, such as vans, trucks, buses, cars, off-road cars, SUV, and other Vehicles. Specification: Power supply: DC10V~30VOperating temperature: -40C~+80CPitch angle: -40~+40Roll angle: -40~+40Voltage measurement range: DC10V~30VVoltage measurement accuracy: 0.5VSpeed accuracy: Package Included: 1 x Head Up Display F3 Description Display Function: roll angle, pitch angle, tire preure monitoring, vehicle speed, altitude, time, voltage, longitude and latitude, compa display 5 Alarm function: tire preure alarm,tire temperature alarm,roll angle danger alarm,tilt angle danger alarm,overspeed alarm