5 lighting modes The headlight has 5 lighting modes: strong light (80LM/2.5H) - medium light (40LM/6H) - slow flashing (80LM/5.5H) - rhythmic flashing (80LM/5.5H) - ECO Flash (20LM/25H). To extend battery life, set to ECO flashing mode. Touch the button to change the mode as you like, hold for about 1 second to turn it off. Waterproof, lightweight and durable It is made of IP66 waterproof material, and the USB interface is covered of waterproof and dustproof silica gel, which can well protect the interior of the bulb and prolong the service life of the bulb. It adapts to various weather conditions and adopts PC plastic shell, so you don't have to worry about theft prevention, it can be easily disassembled after parking and carrying. Real-time Charging Indication/USB BatteryBuilt-in 500MAH rechargeable battery, only takes 1 hour to fully charge. The USB charging port can be connected to computers, mobile power supplies and other devices with USB ports for fast charging. Real-time battery indicator: green light (80%-100%); blue light (30%-80); red light (less than 30%) Night riding safetyWhen cycling at night, 100LM headlights can give motorcyclists a sense of security and can warn other road users. road to keep a safe distance from themselves to better ensure their safety. Easy loading and unloading Easy to lock and secure. The front bicycle light can be easily installed and removed without tools. Whether walking the dog, biking, skating, hiking or camping, these super bright bike lights can keep you safe.