Fireflies E01 SST40W N5 5700K 2300 Lumens EDC LED Flashlight 21700 18650

About Heat Dissipation Structure E01 has very compact size,however the heat dissipation structure is very well designed. With 7 deep heat sink trenches and 15mm thick integrated shelf the light can sustain 2300lumens Turbo for a long time . About thermal Step down: E01 set the tempreture limit to 50 by default. The light will automaticly step down when the body temperature is over 50 degree. The temperature can be configured by users by clicking the switch for 10 times. Product Description: Luminus SST40W N5 5700K emitter with lifespan of 50,000 hours Max 2300 Lumens Made of 6063 aluminum alloy Body color: Matt Black / Clear anodizing Black HAIII Anodising Surface Finish / Clear-ano HAII Anodising 1x 21700 / 18650 (excluded) 6 degree angle TRI lens Toughened ultra-clear glass lens Digital current regulation on lower brightness IPX6 waterproof with Purple switch leds Size: 120mm(L )x 34mm(Head) x 26mm(Body) Net Weight: 96 gram Accessories: standby O rings ; Landyard; Gift box How to operate the light? Fireflies uses free software distributed under the terms of the GNU Public License version 3 ROT66 Anduril code from toykeeper/flashlight-firmware Single click -- On / Off Double Clicks--Max brightness Triple Clicks from Off -- Battery voltage Reading Triple Clicks from On -- Changing over Ramping/Modes Four clicks -- Lock / unlock the light Five clicks-- Momentary mode 7 clicks -- Temperature Reading 10 clicks -- Thermal Configuration Hold switch to change brightness levels ; Loose switch to keep brightness level.