Brake Lamp

It's a simple Brake Lamp for bicycle.

Just tie on seat-post or hang on your backpack with transparent plastic bag.

This simple thing will help you at night when you forgot bring your back light.

- Putting screen should can see your backside.

- Screen will Max-Brightness with stop sign when braking.

- It's Just for emergency use.

- Depends on your device, sensitivity may different.