Quick Summary
The Widuc StVZO rechargeable bicycle rear light is designed for pannier-rack mounting and has an automatic brake light function. It uses USB-C charging and fits a stated screw distance of 50-80 mm.
It has a 220° beam angle, a stated visibility range of up to 500 m, an integrated Z-reflector and a K-test mark (K 1943).
Key Details
| Detail | Product information and buyer relevance |
|---|---|
| Mounting | Pannier-rack mounting with adjustable screw distance from 50-80 mm. |
| Brake light | The light automatically illuminates when braking. |
| Charging and runtime | USB-C charging takes 1 hour; the lithium battery provides up to 4 hours of constant brightness. A battery status indicator is included. |
| Visibility | 220° beam angle and a stated visibility range of up to 500 m. |
| Rating and reflector | IPX5-rated housing, an integrated Z-reflector and K-test mark K 1943. The product is described as StVZO approved. |
| Housing material | ABS/PMMA. |
What to Compare Before Buying
Check that the rack’s light mounting points match the 50-80 mm screw-distance range. Compare the stated maximum runtime of 4 hours with the length of your intended rides, allowing for the fact that this is an upper figure.
Check that USB-C charging suits your charging setup. The product information gives a 1-hour charging time but does not specify the conditions for that figure.
Compatibility, Size and Fit
This light is intended to mount on a pannier rack. Confirm the distance between the rack’s mounting holes before choosing it; the stated adjustable screw distance is 50-80 mm. The product information does not give other mounting dimensions.
How It Works
The brake light function automatically illuminates when braking. The light also has a battery status indicator, so you can check the battery indication before setting out.
Before You Decide
Confirm the rack mounting distance, consider whether the stated runtime suits your needs, and check that USB-C charging works with your setup. The stated IPX5 rating and StVZO approval do not by themselves establish suitability for every use or guarantee legal compliance.
