PAJ GPS Bicycle Rear Light Tracker 4G

The PAJ GPS Bicycle Rear Light Tracker 4G combines a bicycle rear light with GPS tracking, route history and alerts. Its included Premium subscription covers the first three months, after which a subscription is required. Battery life depends substantially on tracking mode, so the standby figure is not a guide to continuous use.

At a glance

Combines a bicycle rear light with a 4G GPS tracker, according to the listing.
Listing describes real-time tracking, route history, geofence and activity alerts, including fall alerts.
Includes a pre-installed SIM card and three months of Premium service. A subscription is required afterward.
The claimed battery span varies from up to 20 days in standby to 1-2 days with continuous tracking.

Price

€37.99Save 24%

Reference price: ~~€49.99~~

Price checked: 12 Nov 2026

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Pros and cons

Pros

Combines tracking and rear-light functions in one bicycle-mounted unit.
Geofence and activity alerts can notify riders about movement or falls, according to the listing.
The three-month Premium plan and SIM card are stated as included.

Cons

Ongoing use of the tracking service requires a subscription after the included three months.
Continuous tracking is listed at only 1-2 days per charge, substantially less than standby life.

Technical specifications

14 specifications

Identity
Brand	PAJ GPS

Tracking and alerts
Connectivity	4G
Features	Alert Notification, Anti-Theft, Location History, Real Time Tracking, Waterproof
Included subscription	3-Month Premium Subscription

Power and battery
Battery life listed	20 days
Battery capacity	3000 Milliamp Hours
Claimed battery life by mode	up to 20 days in standby, 8-12 days with mixed use, or 1-2 days with continuous tracking

Water resistance
Ingress protection rating	IP67

Dimensions and installation
Dimensions listed	8 x 7.5 x 2.8 centimetres
Weight listed	142 Grams
Suggested mounting positions	seat tube or luggage rack

Compatibility
Compatible devices	Personal Computer, Smartphone, Tablet, iPhone
App platforms	Android or iOS

Warranty
Warranty description	2 Year Manufacturer

What to know before buying

Battery claims are mode-dependent: up to 20 days in standby, 8-12 days with mixed use and 1-2 days with continuous tracking. The general 20-day listing is not an unconditional runtime.

What’s in the box

Included

LED BICYCLE Finder 4G
SIM card
User manual

Who is it for?

A good fit for

Cyclists seeking a combined rear light and GPS tracker with movement alerts and route history.
Riders who can recharge regularly when using continuous tracking and are comfortable paying for a subscription after the trial period.

Less suited to

Buyers seeking GPS tracking without an ongoing subscription after the included three months.
Riders who need long battery life while tracking continuously, as the listing claims 1-2 days in that mode.

PAJ GPS Bicycle Rear Light Tracker 4G · 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%

The supplied evidence includes aggregate customer ratings but no written feedback, so it does not establish specific customer-reported strengths or concerns. The rating distribution is mostly five-star but includes one-star ratings, which points to varied experiences without explaining their causes. Ratings alone cannot confirm tracking accuracy, light performance or battery life in particular modes.