- Automatic power on and off with the vehicle: the unit powers on when the car starts and powers off when the car stops, helping to protect the car battery from parasitic drain. - Manual switch control: a dedicated manual switch provides direct control of the HUD when you need to override or pause display. - GPS HUD for accurate data: GPS based HUD delivers reliable data measurements for in-vehicle display. - Compatibility and easy integration: designed to work with GPS HUD systems for in-vehicle use and to synchronize with the vehicle ignition for automatic power management. - Practical use scenarios: 1) Daily commute: start the car and the HUD automatically powers up; when you stop, it powers down to protect the battery. 2) Privacy or glare management: use the manual switch to disable the HUD temporarily without altering other power settings. 3) Long trips or fleet use: GPS HUD provides accurate data measurements to ensure reliable readings across routes.