Anyone ever used this kind of #bike light? Not #DynamoHub, not #FrictionGenerator, but using #magnets. 🧲💡

Are they any good? Or a waste of money? 🤔

I don't expect it to be very bright, of course. Just want to have a low-maintenance, no charging or battery replacement required, backup* tail light. I do ride at night sometimes, and I can't be checking if my battery-powered tail light is still running during my trip.
#bikes #bicycles #accessories #GreenEnergy #SafetyFirst