G21 GPS Head Up Display (HUD) – Digital GPS Speedometer MPH/KMH with Overspeed Alarm & Compass

Upgrade your driving experience with the G21 GPS Head Up Display (HUD).
This advanced digital speedometer uses GPS + Beidou satellite positioning to deliver accurate speed and driving information without connecting to your car’s ECU. Ideal for cars, buses, trucks, and even bikes.

Designed for safety and convenience, the G21 HUD helps you stay focused on the road while monitoring essential driving data at a glance.

Key Features

• Plug & Play Installation: Simply connect to power—no complex setup required

• GPS-Based Speed Display: Accurate real-time speed via satellite signal

• HD LED Display: Clear, bright, and easy to read day & night

• Dual Speed Units: Switch freely between KM/H & MPH

• Universal Compatibility: Works with all vehicles (cars, buses, trucks, scooters, bicycles)

• Smooth & Stable Display: No speed skipping or lag

Display Functions

• Vehicle speed

• Time

• Compass (N / S / E / W)

• Number of satellites

• Single trip distance & driving time

• Total mileage (ODO)

• Altitude

• Acceleration test (0–100 km/h)

• Ambient light automatic adjustment

Safety Alerts

• Overspeed Alarm

• Fatigue Driving Reminder