with smart design,guaranteed in quality. use original U.S.A CREE LEDs,3W/5W LED diving torch,color:blue,black,silvery white. LED life can be used for 50, 000 hours .with two watertightness O-type seals,can bear the press in the depth of 100 meters(328.08399 feet). specifications: 1.use 3XAA batteries; 2.Working time:2-3hrs for 3W LED;1-2hrs for 5W LED; 3.product size: 15.5(L)X4.5(D)X7(D)CM; 4.The product weight:0.238KG(without battery).