Brand SUNWAYMAN Model T20CS Color Black Quantity 1 Material Aluminum alloy Emitter Brand Cree LED Type XM-L Emitter BIN U2 Color BIN Cool White Number of Emitters 1 Brightness 658 lm Working Voltage 3.6~6 V Circuitry 2000 mA Number of Modes 6 Mode Arrangement Turbo Mode (2 x CR123A 658 Lumens 68 min)Hi > Mid > Lo > Fast Strobe > SOS Switch Type Forward clicky (Power switch) Switch Location Tailcap (Power switch) / Side (Mode switch) Mode Memory Yes Runtime 1~2 hours Beam Range 278 meter Lens Glass Reflector Aluminum Smooth / SMO Battery Configuration 1 x 18650 / 2 x CR123A Strap Included Yes Clip Included No Other Feature LED life up to 50000 hours; Lightly press the tailcap switch you can light on the flashlight instantly press till the end you can power on the flashlight; Long press the side switch to control the steady on 3-mode (Hi > Mid > Lo) and it can memory the mode when the last time you stopped; Double click the mode switch under power on you can enter into two strobe modes; Hard anodized: HA-III; Waterproof: IPX8 (Underwater 2m); You can visit the official web to check the details: http://www.sunwayman.com/html/products/201112/69.html Packing List 1 x Flashlight 1 x Case 1 x English user manual 1 x Strap 1 x Strap ring 3 x Backup rubber rings 1 x Backup tailcap switch