Tip: Easy way to open this item for battery installation
To prevent water gets inside of the bicycle LED light, the cover and bottom are designed to be closed tightly for both front headlight and rear LED light
Front LED light
Recommended tool: one cross screw driver, and one quarter coin
1. remove the screw at the bottom of front light 2. insert the coin into the gap between top cover and bottom of the front LED light as picture shows on the right 3. twist the coin a bit to increase the gap in between 4. remove the bottom to install battery
Rear LED light
Recommended tool: one quarter coin
1. insert the coin into the gap between top cover and bottom of the rear LED light as the picture shows on the right 2. twist the coin a bit to increase the gap in between 3. lift up the top cover to install batteries