Brand: Naturehike Model No.: CNK2450ZM010 Color: Green, Brown Ruler: 5.7x3x3.8cm Package Size: 9.5x6.5x8cm Battery Capacity: 3.7V 1800mAH Maximum Output Power: 6.1W Material: ABS/PC Luminous Fiux: 500lm(Max);350Lm (Spotlight);200lm (Floodlight) Operating Temperature: -20°C To 55°C,Relative Humidity Less Than 75% Weight: About 84g Waterproof And Dust proof Grade: Level IP66 Rated Input Power: DC5V 1A Length Of Webbing: 2.5cmx68cm Discharge Duration: 500lm About 4h,350lm About 5.5h,200lm About 6.5h,Red Light More Than 80h Charging Duration: About 2.5h