Fast Rechargeable Headlamp: The headlamp is equipped with a built-in 800mAh battery and a USB cable (the headlamp will glow red when charged and glow green when fully charged), so you don't need to buy an extra battery, it only takes 3 hours to fully charge. It not only extends the life of the flashlight, but also shortens the charging time. 5 Lighting Modes + Long-Term Use: Up to 15 hours of white light operation and 4 hours of high brightness operation. In addition, this headlamp has a more energy-efficient red light mode. Fully charged, it can support your long-term outdoor sports outings. Lightweight LED Headlamp: Lightweight (2.3oz/65g), suitable for kids and adults, comes with a soft headband that automatically adjusts the size, ensuring that our headlamps can fully meet your needs in any situation, such as hiking, night riding, traveling, outdoor. Camping, Adventure, Climbing, Hunting, Fishing, Construction, Maintenance Smart Waterproof LED Headlamp: The flashlight has an IPX5