Cree xml-2 Max output:1200lumen Patent magnetic control button switch Hi/low two modes Battery:3pcsx18650 li-ion 6000mah Battery life:recycle more than 500times Run time:full power more than 3 hours Working volt:12v Goodman handle Waterproof:120meters(under water) Head diameter:58mm length:146mm Net weight:900g, gross weight:1.5kg