Light provides safety. Well, on the trail, the rear light only ensures that the person behind you doesn't run into your spokes. But on the way home from the training lap at the latest, the signal red should warn the traffic: Attention bikers.
We find LED lights that can be charged during the day using the PC's USB plug particularly practical. Lezyne and Knog have already integrated the USB port into the housing and only need to be plugged in. With Blackburn, the USB plug is flange-mounted using magnets. BBB and Owleye draw their power via a cable. This is practical because there is not enough space for the lamp next to every USB socket. They all signal their charging status via an additional LED. Lezyne manages with just one red light source. But it shines particularly brightly. The other indicators warn with three to five LEDs and different light modes. There is everything from a pulsating red light with Lezyne to the "Knight Rider" running light with Knog. All lights are attached to the seat tube using a rubber band. Blackburn can also be conveniently clipped onto a rucksack using a clip.

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