Can it work on EV electric-vehicle? I want to find a speedometer for my model 3.

If you have a USB port or a cigarette lighter port on your car, (don’t know if they even put lighter ports in cars now) this unit works with all cars trucks and commercial vehicles that do have these ports or outlets. This unit does not show mileage driven only your speed.

How can we switch between mph and km/h?

Hi, thanks for your kind message. may i know where you will use this HUD GPS Speedometer? As far as we know, all cars use speed in MPH in USA, our device only has MPH speed also, we aim to offer a very simple but very accurate Speed Display. If you need display in speed in KM/H, please tell me again, we will introduce another model for you. Thanks again.

How accurate is it? Does any one compare it to car or phone?

I tested it against the GPS program on my phone and it was +/- 2 mph on average..

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

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2023 New Speedometer HUD GPS Digital Speed Meter MPH Speedo Head Up Display for Cars Trucks, USB Cable Plug & Play (G20-Only Green)

2023 New Speedometer HUD GPS Digital Speed Meter MPH Speedo Head Up Display for Cars Trucks, USB Cable Plug & Play (G20-Only Green)

Product ID: 566695304

Details

Brand
VJOYCAR
Item weight
0.11 Kilograms
Material
Acrylonitrile
Number of items
1
Unit count
1.0 count

🔋Auto on/off with vibration sensor

🔌USB plug & play install

🚗GPS-based speed accuracy

Description

🚀 Drive smarter, not harder — see your speed like never before!

SMART POWER SAVING - Automatically powers off after 3 minutes of inactivity to save your battery life.
RELIABLE GPS SPEED DATA - Independent of your vehicle’s engine or OBD system—pure satellite precision.
CRYSTAL CLEAR SPEED READOUT - No double images or screen films—perfect visibility even in bright noon sun.
EFFORTLESS PLUG PLAY SETUP - No buttons, no settings, just USB power and instant speed display—zero hassle.
UNIVERSAL VEHICLE COMPATIBILITY - Works seamlessly on cars, trucks, bikes, boats, and more—one device for all your rides.

The 2023 VJOYCAR G20 HUD GPS Speedometer offers a universal, plug-and-play digital speed display that projects your real-time speed directly onto your windshield without any screen films or double images. Compatible with virtually all vehicles, it uses GPS satellite data for precise speed measurement, features an automatic vibration-activated on/off system to conserve power, and requires no complicated setup—just USB power. Perfect for professionals who demand clarity, convenience, and cutting-edge tech on every drive.

Specifications

ASIN	B0BKG5KYXV
Best Sellers Rank	192,798 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 142 in Speedometers
Brand	VJOYCAR
Customer Reviews	4.3 4.3 out of 5 stars (992)
Included Components	HUD
Item Type Name	Universal HUD GPS Speedometer Digital Speed Meter Head Up Display Plug and Play for Cars Trucks Big Fonts KMH MPH New Car Accessories Electronics Factory Direct Offer Low Cost
Item Weight	0.11 Kilograms
Manufacturer	VJOYCAR
Manufacturer Part Number	G20
Material	Acrylonitrile Butadiene Styrene (ABS)
Model Number	G20
Number of Items	1
Number of Packs	1
UPC	610521672619
Unit Count	1.0 count

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