The Knog Frog Bike Light is a compact, rechargeable bike light designed to help cyclists stay visible during commuting, recreational cycling, and everyday transport. Lightweight, easy to mount, and packed with useful features, it’s an excellent choice for bike riders who want a simple, reliable light that can move easily between bikes.

Whether you’re cycling home after work, heading out before sunrise, or simply want extra visibility in changing light conditions, the Frog delivers impressive performance from a remarkably small package. Its flexible mounting system, long battery life, and multiple flash modes make it ideal for commuters, casual cyclists, students, and anyone looking for a convenient “be seen” bike light.

Compact Light, Big Visibility

The Frog may be small, but it’s designed to stand out in traffic. Using advanced Chip on Board (COB) LED technology, it produces a bright and highly visible beam while maintaining a low-profile design. It’s particularly well suited to urban cycling, shared paths, and daytime visibility where attracting attention from motorists is the priority.

Advanced Side Visibility for Added Safety

Unlike many compact bike lights, the Frog features a curved lens design that projects light to the sides as well as straight ahead. This increases your visibility at intersections, roundabouts, and other situations where approaching traffic may not be directly in front of you. For commuters and city cyclists, that extra side visibility can make a real difference.

Quick Mounting for Multiple Bikes

The integrated silicone mounting strap allows tool-free installation in seconds. If you regularly switch between road bikes, gravel bikes, commuter bikes, or e-bikes, the Frog is easy to move from one bike to another. It can also be removed quickly and slipped into a jersey pocket, saddle bag, or backpack when not in use.

Long Runtime with USB-C Charging

With up to 80 hours of runtime available in Eco mode and USB-C recharging convenience, the Frog is designed for everyday use. The battery level indicator helps avoid unexpected flat batteries, while nine lighting modes allow you to choose the right balance of brightness and runtime for your cycling conditions.

Item Specs

• Brand: Knog
• Product: Rechargeable bike light
• LED type: Chip On Board (COB) LEDs
• Maximum output: Front 40 lumens / Rear 20 lumens
• Light modes: 9
• Runtime: Up to 80 hours (front) / Up to 60 hours (rear)
• Rechargeable: Yes
• Charging port: USB-C
• USB-C cable included: No
• Waterproof rating: IP65
• Battery level indicator: Yes
• Mounting system: Integrated flexible silicone strap
• Fits handlebar diameters: 22.2mm to 32mm
• Dimensions: 80mm x 35mm x 42mm
• Weight: 40g
• Strap material: Medical-grade silicone
• Operating temperature: -20°C to 50°C
• Suitable for: Road bikes, gravel bikes, commuter bikes, hybrid bikes, e-bikes and recreational cycling