【If you need to buy batteries or other styles flashlight， please visit my store.】Output bright can come to above 2000 lumens [Lm] the largest extent.Internal wiring applies the high efficient booster circuit， working voltage is wide and can utilize the batteries inWaterproofing designAerospace Grade Aluminum Body with Anti Scratching Type III Hard AnodizatioModel: K8Emitter Brand/Type: CREEEmitter BIN: XM-L2Material: Aluminium AlloyMode: high-low-middle-strobe-sosBattery Configurations: 1 x 18650 (Included)Switch Type: clickySwitch Location: tail of the flashlightBrightness: 2000-LumenConstruction: Shakeproof and waterproofLens: GlassReflector: SMOCurrent: Max 4000mA Current Output (manufacturer rated)Weight: 181gCarrying Strap: yesColor: blackSize: 16.7cm(Length) x 4.3cm(Head)/2.8cm(Body)Package Contents:1 x UltraFire K8 CREE XM-L2 T6 LED Flashlight1 x Rechargeable 18650 Battery1 x AC Charger1 x DC Car Charger1 x AC Adapter specificly suits for your country