1/.Emitter: CREE XM-L series LED-Max Output(OTF):430lms(CW); 3-Color Temperature optional: Cool White, Neutral White, Warm White. The story of Color Temperature: Cool White: to get max output & fits for warm, hot area & season. Neutral White(Outdoor White): for better color rendering; feels comfort,natural. Warm White: has the best color rendering. the No.1 choice for the dark-night of Winter. 2/.LED Driver: built in XENO DE2 Engine linear LED driver, Not PWM mode Non-Flickering & Absolutely Noiseless even at Ultra-Low levelwith Ultra-Low output, more than 20 hrs burning time XENO unique Quiet RSLTM technology XENO GFC(Gamble Free Concept) Impact-Resistant System Built-in battery inverted-load protection Rated Input of LED Driver: DC0.8~3.7V 3/.Battery:Use any AA size battery-a dry cell,Alkaline,Ni-Cd,Ni-MH,14500 Li-ion,LiFePO4. 4/.Output(by DE2h): 3-Stage Variable Output: Low, Ultra Low, High. The Low output is always the start mode after 3 seconds power-off.Max Output: 430lms,Max Burning Time:20 hours. 5/.Finished & Color optional: Ti-Black, Polished, Sand Blasting is optional. 6/.Reflector: Al-Alloy, micro-OP, special for XM-L series LED. 7/.Window(Lens): High quality toughened mineral-glass lens, precision polish the edge for Impact Resistant. 8/.Water proof: 5 meters dunk-resistance. 9/.Weight-reducing: Only 6 oz(170g) as to XENO unique design of Weight-Reducing. 10/.XENO CUBE:the 1st quadrate flashlight on the blue Earth.machining by CNC with 303 stainless steel solid cylinder. 11/.XENO unique design of weight-reducing 12/.XENO originate: Double Thread--Fast screw and unscrew 2. Specifications 1/.Emitter: CREE High-Power LED,XM-L series. 3-CT optional: XM-L 1B T6,Color Temperature5000~8300K,CoolWhite,MaxOutput430lms OR XM-L 4C T5,ColorTemperature3700~5000K,NeutralWhite,MaxOutput400lms OR XM-L 7B T4,Color Temperature2600~3700K,WarmWhite,MaxOutput350lms 4/. Output(OTF) & Burning time(CW version): 3-stage variable output *.Using Ni-MH battery: Low:150mA/45lms/4hrs,Ultra Low:20mA/20lms/20hrs,High:350mA/120lms/1hr *.Using 14500 Li-ion battery Low:1A/280lms/45min UltraLow:300mA/80lms/2.5hrs High:1500mA/430ms/20min Measured with*:single 2600mAH SANYO eneloop AA Ni-MH rechargeable battery or 800mAH 14500 Li-ion rechargeable battery. Both full recharged and continuous testing to get a burning time. *The experience result will be a little different for the battery of different brand, condition etc. Size: length 101mm,quadrate section 21*21mm, circular arc corner. Net Weight: 6 oz(170g,battery not included). Packing Information: Tin box; Size:L129*W95*H33mm; G-Weight: 10.3 oz (290g).