PLEASE NOTE: WE ORDER ALL ITEMS FROM THIS SUPPLIER AS WE GO ALONG, AND WE NEED TO CHECK WITH THE SUPPLIER FIRST TO MAKE SURE THERE IS AVAILABILITY. MANY THANKS IN ADVANCE, WATERWORLD SPORTS   LED CREE XM-L L2(Max 1050 lumens) Color temperature Cold White 6500K / Warm White 5000K Runtime High light:4hrs; Low light:8hrs Brightness Levels High> Low>SOS Reflector Glossy aluminum reflector Lens 4mm PC lens Body material Durable aircraft-grade aluminum Beam Angle 5° hot spot, 60° periphery Surface finish Premium type III hard-anodizing Battery 1*26650 Li-ion rechargeable battery Operation voltage 2.7V-4.5V Waterproof IPX68, 100M underwater Dimensions 169 (length)*33 (dia. of end) *54MM (dia. of head) Weight 365g on the land(with battery); 175g underwater(with battery) Impact resistance 1.5M Operation Instruction Successive switching ON-OFF within two seconds to cycle through High, Low and SOS. Feature Battery over-discharging protection, polarity reversing protection