Quick Summary
The CATEYE Viz 300 is a rechargeable rear bike light with a stated 300-lumen output, 300° wide-angle visibility and four lighting modes. It uses USB-C charging and has an adjustable strap mount.
Key Details
| Detail | Product information and buyer relevance |
|---|---|
| Light type | Rear bike light. |
| Output | 300 lumens. |
| Visibility | 300° wide-angle illumination. |
| Modes | High, Low, Daytime HyperFlash and Group Ride. |
| Runtime | Up to 45 hours in Group Ride mode. No runtime is given for the other modes. |
| Charging | USB-C rechargeable. |
| Mount | Adjustable strap described as fitting various seat post sizes. |
What to Compare Before Buying
- Light output and coverage: Compare the stated 300 lumens and 300° visibility with the coverage you want from a rear light.
- Mode and runtime: The up-to-45-hour figure applies to Group Ride mode only; do not assume the same runtime in High, Low or Daytime HyperFlash.
- Water protection: Check the product’s stated water-protection rating and limits if this matters for your riding conditions.
Compatibility, Size and Fit
The adjustable strap is described as fitting various seat post sizes, but no specific size range is provided. Check that the strap can fit your seat post and that the light can be mounted in the position you require.
Before You Decide
Check that the four named modes and Group Ride runtime suit your requirements, confirm the strap fits your seat post, and consider the stated output and visibility angle. The source description does not give a water-protection rating.
