This mini real light is specially designed for bikes with disc brakes. Just with 2 or 3 magnets installed on the bolts on disc brakes and the light installed between the skewer and the hub， you just need to pedal to generate the electricity through electromagnetic induction. ?

Features:?
Mini， reliable and rain resistant.
Specially designed for bikes with disc brakes (The center of the brake should not be made of aluminum alloy.)
No battery required， eco-friendly and energy-conserved.
To adjust the metal clamp to adapt to different bikes.
Easy to install with no tool required.
Note: If you apply three magnets， please make sure one of them is installed in a reversed way for a better lighting effect.

Specifications:
Color: Black + Red?
Light: LED
Material: High-strength Plastic !#!amp!*! Stainless Steel?
Item size: 36 * 32 * 25mm / 1.4 * 1.3 * 1.0in
Item weight: 32g / 1.1oz?
Package size: 8.7 * 7.1 * 3cm/ 3.4 * 2.8 * 1.2
Package weight: 45g / 1.6oz

Package List:?
1 * Bike Light?