Reelight Gem+ USB-C Rear Bike Light | 150 Lumens COB LED

Increase your visibility and ride with confidence using the Reelight GEM+ Rechargeable Rear Bike Light. Designed for both day and night riding, the GEM+ combines powerful illumination, intelligent brake light technology and a versatile mounting system to help keep you visible on every ride.

With up to 150 lumens of output, 180° wide-angle visibility and six lighting modes, the GEM+ is the ideal rear light for commuting, road cycling, gravel riding and everyday adventures.

Key Features

• Up to 150 lumens of brightness
• Wide 180° visibility for maximum safety
• Intelligent brake light automatically increases brightness when slowing down
• Brake light function can be enabled or disabled
• 6 lighting modes including steady and flashing options
• Rechargeable 900mAh lithium-polymer battery
• Up to 82 hours of runtime
• Fast USB-C charging (cable included)
• Waterproof IPX4 construction for year-round riding
• Fits seat posts, seat stays and luggage racks
• Magnetic rear housing for easy storage and use as a portable work light
• Compatible with the GEM+ Front Light (sold separately)

Intelligent Brake Light

The GEM+ features an integrated brake light sensor that detects deceleration and automatically increases brightness for three seconds when you slow down. This helps alert riders and motorists behind you, improving visibility and safety in traffic. The brake light function can be switched on or off to suit your preference.

Easy Mounting

The supplied mounting bracket installs securely to your seat post, seat stay or luggage rack. Once fitted, the light clicks in and out of the bracket quickly, making it simple to remove for charging or security.

Magnetic Convenience

A built-in magnetic back allows the GEM+ to attach to metal surfaces, making it handy as a workshop or emergency light. It also connects magnetically with the matching GEM+ Front Light (sold separately) for compact storage in your pocket or bag.

Long Battery Life

Powered by a rechargeable 900mAh lithium-polymer battery, the GEM+ delivers impressive runtime while recharging in approximately 3 hours 15 minutes using the included USB-C cable.

Light Modes & Runtime

Specifications

• Maximum Output: 150 lumens
• LED: Curved COB LED
• Visibility: 180°
• Intelligent Brake Light: Yes
• Battery: 900mAh rechargeable Li-Poly
• Charging: USB-C (cable included)
• Charge Time: Approximately 3 hours 15 minutes
• Waterproof Rating: IPX4
• Mounting: Seat post, seat stay or luggage rack
• Installation: Mounting bracket and Allen key included
• Charger: Not included
• Complies with Danish bicycle lighting legislation