PAJ GPS Bicycle Rear Light and 4G Tracker

PAJ GPS’s Bicycle Rear Light combines a bicycle tail light with a 4G GPS tracker. It lists real-time location tracking, route history, geofencing and fall alerts, with three months of Premium service included before a subscription is required.

At a glance

Combines a rear bicycle light and GPS tracker in one unit.
The listing describes real-time tracking, route history and a geofence alert if the bicycle leaves a designated area.
Fall, movement and power-off alerts are listed. The description says the last position is sent before power-off.
A SIM card and three months of Premium service are included. A subscription is required after the initial period.

Price

£37.99Save 24%

Reference price: ~~£49.99~~

Price checked: 14 Nov 2026

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Pros and cons

Pros

Combines a rear light with a tracker, so riders do not need a separate tracking unit for these functions.
Geofencing and route history provide location-related functions beyond live tracking.
The listing offers distinct battery-life estimates for standby, mixed use and continuous tracking.

Cons

Ongoing use of the tracking service requires a paid subscription after the included three-month Premium period.

Technical specifications

9 specifications

Identity
Brand	PAJ GPS

Connectivity and features
Wireless connection listed	4G
Listed features	Geo-Fence, Location History, Real Time Tracking, Theft-proof, Waterproof

Power and battery
Battery life listed	20 days
Battery capacity	3000 Milliamp Hours

Dimensions and installation
Dimensions listed	8 x 7.5 x 2.8 centimetres
Weight listed	142 Grams

Use and compatibility
Compatible devices	Personal Computer, Smartphone, Tablet

Service and warranty
Warranty listed	2 years

What to know before buying

Battery claims are mode-dependent: up to 20 days in standby, 8–12 days with mixed use, or 1–2 days with continuous tracking. The 20-day table figure should not be read as continuous-use life. The listing also claims IP67 waterproofing.

What’s in the box

Bicycle rear light with GPS trackerIncluded
SIM cardIncluded
Three months of Premium serviceCheck selected pack

Check which accessories are included in your selected pack before buying.

Who is it for?

A good fit for

Cyclists who want a rear light and GPS tracking in one device.
Riders who value geofence, route-history and fall-alert functions and are willing to maintain a subscription.

Less suited to

Buyers seeking tracking without ongoing subscription fees.
Riders who need multi-day battery life while using continuous tracking.

PAJ GPS Bicycle Rear Light and 4G Tracker · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.2 / 5 · 52 ratings

5 stars71%71%
4 stars9%9%
3 stars3%3%
2 stars4%4%
1 star13%13%

Customer-rating data is positive overall, with most ratings in the five-star category, but a notable share is one-star. Without written feedback, the ratings do not identify specific strengths, problems or reasons. Consider the mode-dependent battery claims and subscription requirement when judging whether it fits your riding routine.

Frequently asked questions

How long does the battery last?

The listing claims up to 20 days in standby, 8–12 days with mixed use and 1–2 days with continuous tracking. Actual duration depends on operating mode.

Is a subscription required?

Three months of Premium service are included, and the listing says a subscription is required afterwards.

What is included?

The stated contents are the bicycle rear light with GPS tracker and a SIM card. The title also claims three months of Premium service.

Can it alert you if a bike moves or falls?

The description lists movement and fall alarms, along with a geofence alert when the bicycle leaves a designated area.