No display on screen, no power

Check if the USB cable is damaged. Replace the USB cable for testing, and prohibit the use of voltages exceeding 5V.

The flashing power satellite icon indicates satellite search status for underground parking garages, tunnels, and overpasses. When obstructions prevent satellite connection, move the vehicle to an open area to restore normal operation.

After the vehicle stops, the speed will still be displayed.

Underground parking garages, tunnels, overpasses, and shielding may cause unstable signals and satellite drift. Please drive to an open area.

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

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Car GPS HUD (Head-Up Display) – H4 Digital Speedometer with Auto-Dimming, Real-Time Speed and Compass, KM/H Switchable, Windshield Projection Display, Compatible with All Vehicles

Product ID: 658198754

Details

Brand
YAOUZICN
Item Weight
0.33 Pounds
Item dimensions L x W x H
10 x 6.5 x 2
Material
Acrylonitrile
Number of Items
1

🌗Auto-dimming LED for glare-free night driving

📡Dual GPS + BeiDou precision ±0.5%

🔄Switchable KM/H & MPH for global use

Description

🚗 Drive Smarter, Not Harder — See Speed & Direction Without Looking Away!

PRECISION YOU CAN TRUST - Dual satellite GPS + BeiDou technology delivers speed accuracy within ±0.5%, keeping you confidently on track.
DECLUTTER YOUR DASHBOARD - Compact, lightweight design projects essential data in your line of sight, reducing cockpit distractions.
EYES ON THE ROAD ALWAYS - Real-time speed & compass projected on your windshield for safer, distraction-free driving.
GLOBAL READY TRAVEL SMART - Easily switch between KM/H and MPH to match local driving standards wherever you go.
SEAMLESS DAY TO NIGHT ADAPTATION - Auto-dimming display adjusts brightness automatically to protect your eyes and enhance visibility.

The H4 Car HUD Head-Up Display is a compact, lightweight device that projects real-time speed and compass direction onto your windshield using dual GPS + BeiDou satellite technology with ±0.5% accuracy. Featuring an auto-dimming LED display for optimal visibility day and night, it supports easy switching between KM/H and MPH units, making it perfect for international travel. Designed with durable ABS material and simple plug-and-play USB setup, it enhances driving safety by keeping your eyes on the road and reducing dashboard clutter.

Specifications

ASIN	B0D97JWJX4
Brand Name	YAOUZICN
Customer Reviews	3.5 3.5 out of 5 stars (16)
Included Components	H4 HOST/ Reflective film/ 2.5M USB Cable/ 3M glue/ Instructions
Item Dimensions	10 x 6.5 x 2 Centimeters
Item Weight	0.33 Pounds
Manufacturer	Yaouzicn
Material Type	Acrylonitrile Butadiene Styrene (ABS)
Model Number	H4
Number of Items	1
Number of Packs	1
Part Number	M23

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