about this project 8 working modes: with double switch, right button (3T6, 2 XPE, 3T6+2 XPE, 3 T6+2 XPE strobe). Left Button (2 COB Power, 2 COB, 2 COB Red Power, 2 COB Red Strobe). Rechargeable Waterproof: Equipped with 2*18650 rechargeable batteries and USB data cable. Both the headlight and the battery compartment are waterproof, adding a lot to your long-distance travel and making it safer and more reliable. 90 Degree Rotatable: The headlight is adjustable, suitable for any head shape or helmet, light weight and comfortable, perfect for night running, hands free, widely suitable for walking, camping, reading, fishing. High Quality Aluminum Alloy and Optical Lens: Made of high quality aluminum alloy and optical lens - light transmittance up to 98% - to restore the true color for you. 3 hours charging time, can use more than 6-8 hours. It is also waterproof, scratch-resistant, corrosion-resistant and sufficiently stable. characteristic: Very bright! With adjustable elastic headband for easy on and off. Adjustable and flexible 90 design lamp head Humanized design with 90 tiltable and adjustable light head can direct the light beam where you need it and increase your wide range visibility in the dark. Use the headlamp to keep your hands free so you can focus on your own business in the comfort and convenience of your daily life. Best headlamp for night fishing, cycling, hiking, hunting, camping and night work. Note: Do not shine the flash directly into the eyes of people and animals. Product Specifications: Maximum power: 2200 lumens Power (watts): 20 watts Waterproof: IPX5 standard Composition: Aluminum Alloy Lifespan: up to 80,000 hours Color temperature: 6000K Battery Life: Fully charged in 3-4 hours (5 LEDs light up). Economical in 8 hours (2 lower LEDs on). Item Weight: 0.7 lbs