Cycling Headlight LED FlashlightColor: blue silverProduct size: 9.2*4.2*4.51. This product is beautiful and novel in appearance, and adopts acrylic high-transparency lampshade + PC spotlight transparent lampshade + PVC plastic lamp body design;2. Living waterproof, the key switch and the USB charging interface are covered with expanded rubber, which is dustproof and waterproof, but does not support diving, and should be wiped clean in time after being exposed to rain, and it is advisable to store it in a dry place;3. The transparent PC lampshade design with high light transmission on the front has a higher refractive index;4. Power saving, computer USB interface charging, can reciprocate charging, saving battery and more environmentally friendly; do not turn on the lights when the lights are dark and lack of power, otherwise it may damage the battery, please charge in time; if the lights are left on for a long time If it is not used, the self-discharge of the battery will also drain the power, resulting in over-discharge. Therefore, please keep the charging frequency once every 2 months;