Headlight built-in 4000mAh rechargeable lithium battery, headlight can work 6-18 hours, tail light can work 50 hours. IPX5 waterproof headlights for rainy days. 1000 lumens allows you to see 300~500 meters, improving your visibility and safety. 360 rotatable stand so the bike headlights can shine in any direction you want. 3 Optical mode: high/low/Stroboscopic, 5 optical mode: high/medium/low/stroboscopic /SOS. When powered off, hold down for 3 seconds to switch between 3 and 5 modes. Free to adjust according to your preference. Bicycle headlights are made of high-quality aluminum alloy shell, with excellent impact resistance, heat dissipation and corrosion resistance, which greatly extends the service life of bicycle lights. Date First Available May 24, 2024