Brand Olight Model M18 Color Black Quantity 1 Material Aluminum alloy Emitter Brand Cree LED Type XM-L2 Emitter BIN T6 Color BIN Cool White Number of Emitters 1 Brightness 500 lm Working Voltage 3.6~4.2 V Circuitry 1500 mA Number of Modes 4 Mode Arrangement Lo > Mid > Hi > Fast strobe (Long press the button) Switch Type Forward clicky Switch Location Tailcap (power switch) + side (mode switch) Mode Memory Yes Runtime 2 hours Beam Range 135m Lens Glass Reflector Aluminum Smooth / SMO Battery Configuration 1 x 18650 / 2 x CR123A (not included) Strap Included Yes Clip Included Yes Other Feature Waterproof: IPX8 (2m); Utilizing the newest Cree XM-L2 LED the highest output reaches 500 lumens; Three adjustable brightness levels (low-medium-high) and 10Hz strobe; Multi-function tail switch: Quickly double click the switch to activate high output; Quickly triple click the switch to activate strobe; while release to quit. Push down the switch to confirm the output (high or strobe) but the side switch will be locked out then; Press side switch to change the brightness in cycle after power on the light from tail switch; With a strong removable pocket clip easy and reliable for use; Thick stainless steel bezel protects the lens; Intelligent driver circuit with memory function automatically memorizes the output level before shutdown; Perfectly applicable with CR123A RCR123A & 18650 batteries; Aviation grade aluminum body with anti-scratch type III hard anodizing; Lens: Toughened ultra-clear glass with anti-reflective coating; Reverse polarity protection guards against improper battery installation; Low voltage indication: the bottom side switch will shine in red when the power is low; Spring contact structure (on both the 2 poles) is adopted to enhance the ability of anti-vibration available for flat head and oblate head 18650 batteries. Packing List 1 x Flashlight 1 x Strap 1 x CR123A battery holder 2 x Backup O-shaped rings 1 x Chinese / English user manual