Gugou Bicycle Headlight Cycling flaslhlight Waterproof Mountain Bike Front Light Headlamp with Rechargeable Battery Pack and AC Charger The bicycle front light battery upgraded from 6400mAh to 7000mAh, which can last approximately 4 hours on strong light mode, 6 hours on flash light mode and 10 hours on low light mode, perfect for night riding. This bicycle light is easy to install, just hook the rubber o-ring on the lip of the plastic base, then go around to your handlebar to the other lip. The bike headlamp battery upgraded from plastic material to silicon waterproof, which can be used for outdoor activities in rainy days. It will be more convenient and safe. There is a single button on the back of the led headlamp, where you can choose the mode Weak, Middle, Strong, Strobe (Long press) you need. Used For Headlamp or Bicycle Front Light for camping, climbing, hiking, fishing, spelunking.