HDD-1052 CREE Q3 High power Rechargeable Aluminum Flashlight Material: AerospacegradealuminumT6061Surface Treatment: Premium Hard-anodized treatment Emitter: CREE Q3, the max output: 180lumens, the service life 100,000 hours Drive plate: constant current drive, Three dimming with memory.Reflective cup: aluminum alloy mirror reflector cupLens: tempered glassBattery:1* 18650 rechargeable lithium batteriesOperating voltage: 2.8V-5.6VOperating temperature: -25 65Switches: the tail button switch Dimensions:41.5×29×143mm Weight:128.2g(without battery) Brightness, working time andlighting mode:working informationunder 2200mAh 1*18650 lithium battery powered 1st: current 700 milli amperes, 200-220 lumens brightness, time 3.5 hours2nd: Current 350 milli amperes, 110 lumens brightness, time 11 hours3rd: Quick flash, the general frequencyis 9 Hz