1.The lights are based on the electrodynamic induction principle, and work by screwing two magnets onto the spokes and mounting the light onto the wheel axle. The light contains a copper wire coil and current is generated when the magnet passes the light. As the wheel rotates, the light will flash accordingly.
2. No on and off switch, no batteries, lights stay lit all day powered by the magnetic generator provided. Best of all, it's friction free system! One extra fork mount system provided.
3. As soon as you ride on your bike the generator starts to power on the light.
4. A magnet and LED safety light are included.
5. Easy installation, The faster the brighter
6. Package include :
1 x Bike Tail Light
1 x Magnet

• The bicycle light do not need to install any battery and solar cells,conditions of use is not restricted by the light source
• The lights are based on the electrodynamic induction principle ,work by screwing two magnets onto the spokes and mounting the light onto the wheel axle.
• As the wheel rotates, the light will flash accordingly
• Eco friendly , Make you riding safty and happy
• Easy installation, The faster the brighter

The bicycle light do not need to install any battery and solar cells,conditions of use is not restricted by the light sourceansuo