Diving High Power Green Laser Pointer Material: Hard aluminum3, Exterior surface treatment:flashlight/blond4, Switch ... :CR186506,Wavelength:532nm7,Power:300mw,400mw,500mw,600mw,700mw8, Range:500-1000m9,Start time:<3 seconds10,Working voltage:DC3.7-4 ... a long time under the water Diving High Power Green Laser Pointer