Stair Led Light / Led Light

This stair led light is economical electricity light which is designed for lacking energy city.The electricity energy is generated by people who walk upstairs and downstairs.The generator gathers electricity energy when the gear wheel got up and down,and then it put the electricity energy into secondary cell in daytime.OK,now the night is coming.The secondary cell transmit the electricity to led to illuminate the stair room.This stair led lght will instead the former stair lamp to avoid the waste of resource.