use original U.S.A CREE LED,3W/5W LED diving torch,with LED life up to 50,000 hours.perfect design with double watertightness seals(IP68),can bear pressure mostly to the depth of 100 meters(328.08399 feet). specifications:1.use 3 D-type batteries;2.Working time:2-3hrs for 3W LED;1-2hrs for 5W LED;3.product size:26(L)X3.5(D)X4.8(D)CM;4.The product weight:225.2G(without battery)