Product Overview
The Knog Plus Free Light is a versatile, USB-rechargeable, hands-free light designed for enhanced visibility and safety during various activities such as night running, cycling, and general road safety. Its ultralight and compact design allows for easy attachment to clothing or gear, providing reliable illumination.

Image: Front view of the Knog Plus Free Light, showcasing its illuminated LED strip and compact form factor.
Key Features:
- Latest COB Technology: Efficient Chip on Board LEDs deliver maximum brightness for up to 90% of battery life.
- Integrated USB Connector: Cable-free charging by plugging directly into any USB-A port.
- Wearable Clip: Easily attaches to clothing, hats, bags, or shoes.
- Charge Indicators: Red light indicates low battery or charging status.
- Ultralight & Waterproof: Weighs just 17 grams with an IP66 waterproof rating.
- Visibility: Super-bright output visible up to 450 meters.
- Runtime: Up to 40 hours of operation depending on mode.
Setup and Charging
Before first use, ensure your Knog Plus Free Light is fully charged. The integrated USB-A connector makes charging convenient and cable-free.
- Locate the integrated USB-A connector at one end of the light.
- Plug the connector directly into any standard USB-A port (e.g., on a computer, wall adapter, or power bank).
- A red light next to the button will illuminate, indicating that the light is charging.
- Charging typically takes approximately 2 hours for a full charge. The red light will turn off once charging is complete.

Image: Rear view of the Knog Plus Free Light, clearly showing the integrated USB-A connector ready for charging.
Video: Demonstrates the charging process of the Knog Plus Free Light, showing how to plug it into a USB port and the indicator light behavior. Also covers low battery indication.
Operating the Light
The Knog Plus Free Light is operated using a single multi-function button.
- Power On/Off: Press and hold the button for approximately 1 second to turn the light on or off.
- Change Light Modes: While the light is on, a short press of the button will cycle through the five available light modes (e.g., steady, flash patterns).
Video: Illustrates how to turn the Knog Plus Free Light on and off with a long press, and how to cycle through the five light modes with a short press.
Mounting and Usage
The versatile clip design allows the Knog Plus Free Light to be securely attached to various items, providing hands-free illumination wherever you need it.
- Direct Clip: Simply slide the integrated clip onto a suitable edge of your clothing (e.g., shirt collar, pocket, sock), backpack strap, or other gear.
- Enhanced Security (Silicone Strap): For activities involving more movement or to ensure maximum security, use the included silicone strap. Once the light is clipped, stretch the silicone strap over the end of the light and around the clipped material to prevent accidental detachment.

Image: Side profile of the Knog Plus Free Light, showing the design of its integrated clip for easy attachment.

Image: A person wearing a backpack with the Knog Plus Free Light clipped to the shoulder strap, demonstrating its use during a nighttime run or walk. The light provides visibility from the front.

Image: A person with the Knog Plus Free Light clipped to their shirt, showcasing its hands-free illumination for night activities. The light is bright and clearly visible.
Video: Demonstrates various mounting options for the Knog Plus Free Light, including clipping it to a backpack strap, a pocket, and using the silicone strap for added security. Shows both front and rear light applications.
Maintenance
To ensure the longevity and optimal performance of your Knog Plus Free Light, follow these maintenance guidelines:
- Cleaning: Wipe the light with a soft, damp cloth. Do not use harsh chemicals or abrasive cleaners.
- Storage: Store the light in a cool, dry place when not in use. Avoid extreme temperatures.
- Waterproof Rating: The light has an IP66 waterproof rating, meaning it is protected against powerful water jets. While it can withstand rain, avoid prolonged submersion.
- Charging Port: Keep the USB-A connector clean and free of debris to ensure proper charging.
Troubleshooting
If you encounter issues with your Knog Plus Free Light, try the following solutions:
Problem | Possible Cause | Solution |
---|---|---|
Light does not turn on. | Low battery. | Charge the light fully (approx. 2 hours). |
Light does not charge. | USB port issue or dirty connector. | Try a different USB-A port. Ensure the connector is clean and free of debris. |
Light modes are not changing. | Incorrect button press. | Ensure you are performing a short press to cycle modes, not a long press. |
Light falls off easily. | Not using silicone strap or improper attachment. | Use the included silicone strap for a more secure fit. Ensure the clip is fully engaged with the fabric/strap. |
Product Specifications
Feature | Detail |
---|---|
Brand | KNOG |
Model Name | Knog Plus Free Light - USB Rechargeable Handsfree Lights for Night Running, Cycling, Road Safety - 40 Lumens, 5 Light Modes, Lightweight, 100% Waterproof (Front, Black) |
Item Weight | 10 Grams |
Dimensions (LxWxH) | 10.07 x 2.48 x 1.86 inches |
Material | Plastic |
Color | Black |
Lumen Output | 40 Lumens |
Light Modes | 5 Modes |
Waterproof Rating | IP66 |
Charging Type | Integrated USB-A Connector |
Max Runtime | Up to 40 hours |
Visibility | Up to 450 meters |
Warranty and Support
The Knog Plus Free Light comes with a 2-Year Warranty from the date of purchase, covering manufacturing defects.
For technical support, warranty claims, or further assistance, please visit the official KNOG website or contact their customer service department. You can find more information at the KNOG Store on Amazon.