Check the listing for details. XTAR Diving Series D10 CREE XM-L U2 LED 800 Lumen 100m Dive Flashlight. Condition: New. Listed at 99.99 USD. Specs: 50,000 hours lifespan CREE XM-L U2 LED Luminance: 16 Lm → 800 Lm Duration: 250h 2h20min SMO reflector, throws beam over 356 meters( on land) Electrodeless magnetic control switch Constant circuit constant brightness Power by 2 * 18650/ 2 * 18700（3.7V)/4* CR123A(3.0V) lithium batteries Made of anodized aircraft 6061 aluminum and premium type III hard-anodized anti-abrasive finish Amphibious 100m deep diving sealed compression resisted design Safety switch design 5.6~13.5V voltage range Size: Ø 64mm(Head dia)x Ø 30mm(Body dia)x 232.5mm(length) Net Weight: 360g(Excluded battery) Features: Toughened glass lens with anti-reflective coating Low voltage reminding. When using 4 pcs CR123A, if the battery voltage is lower than 9.0V, or when using 2 pcs 18650/18700, if the battery voltage is lower than 6.0V, the LED will strobe once every five second, total five times, to remind user to replace new batteries.