Answer: that is the switch when using old bicycles to turn on the lights, you have to press them close to the tire, when there is friction,
the light will turn on
Even though it’s small, its use can help many people. Probably only those who have used it will see it
Answer: that is the switch when using old bicycles to turn on the lights, you have to press them close to the tire, when there is friction,
the light will turn on
