M4 OBD2 Head-Up Display – Multi-Color HUD with Speed, Voltage, Temp & Mileage Readouts

M4 OBD2 Head-Up Display — Multi-Color HUD with Speed, Voltage, Temp & Mileage Readouts

The M4 OBD2 HUD is a vibrant, multi-color head-up display that projects real-time driving data directly onto your windshield. With automatic brightness adjustment and a built-in anti-glare hood, it ensures optimal visibility of your speed, voltage, temperature, and mileage — day or night. Designed for plug-and-play use via your vehicle's OBD2 port, the M4 is the perfect upgrade for safer, smarter driving.
Key Features:

Projects speed (km/h or mph), water temperature, and voltage in full color

One-click toggle between speed, temp, and voltage modes

Tracks single-trip mileage even after ignition is turned off

Overspeed and temperature alarms for added safety

Automatically adjusts screen brightness based on lighting conditions

Large 2.3cm digits with glare-free display and integrated lens hood

Compact design fits discreetly on any dashboard

Easy plug-and-play installation via OBD2 — no tools required