Product name:       Klarus ST15 CREE XP-L HI V3 1100LM LED Flashlight           Brand:       Klarus           Model:       ST15           Emitter Brand       Cree           Emitter Type:       XP-L HI V3           Material:       Aircraft-grade aluminum 6061-T6、 Type III hard-anodized           Total Emitters:       1           Mode:       High、Mid、Low、Turbo、Strobe、SOS           Max Lumens:       1100LM           Max Runtime:       210hrs           Battery Configurations:       1x 18650 battery with PCB protection or 2 x CR123A batteries (Do not use 16340 batteries)           Switch Type:       Clicky           Switch Location:       Tactical Tail Switch and Side Switch           Working Voltage:       2.5V-8.4V           Beam Intensity:       23256cd           Impact Resistant       1m           Range:       305m           Lens:       Toughened ultra-clear glass with anti-corrosion AR coating           Reflector:       Smooth reflector           Waterproof:       Underwater 2m           Weight:       110g (Excluding battery)           Size:       33mm(Head) × 25.4mm(Body) × 138mm(Lenght)   Features:  1. CREE XP-L HI V3 LED delivers a maximum output of 1100 LM、 providing a strong spotlight with a maximum beam distance of up to 305 metres  2. Tactical ON\/OFF Tail Switch designed for easy access in the dark Side Switch changes brightness、      the two separate switches with distinct functions simplify operation  3. Memory function that activates the preselected brightness level when the flashlight is switched on  4. Improved side Switch to change brightness by either clicking through modes individually or by holding in the switch、      which then cycles through the mode options    automatically until you find the required level of brightness  5. Mode setting optimized for improved outdoor experience:      Turbo mode of 1100 LM  provides maximum clear vision      High mode of 400 LM  gives sufficient bright light over an extended period for hiking      Medium mode of 100 LM  offers the perfect combination of brightness and battery runtime for camp lighting      Low mode of 10 LM  produces ultra-long runtime with reduced dazzle for night reading without disturbing others  6. Latest Smart ITS temperature control system monitors internal temperature and adjusts output for maximum brightness while      protecting the LED and internal components  to ensure safety、  stability and optimum performance  7. Battery  indicator display enables you to control usage according to remaining charge  8. Constant current circuit with no PWM dimming to prevent flickering  9. Battery low power protection automatically reduces output when the battery is almost drained、 effectively preventing over-discharge and providing continued       use in emergency situations.1