Highlights Diving underwater 100m design. LED life span: 50000 hours. Four modes: 100% brightness, 50% brightness, 20% brightness and flashing. General Spec Brand MAGICSHINE Type flashlight torch Material T6 aircraft aluminum alloy Type of LED SSCP7 CSXO LED Life Span 50000 hours Light white light Luminous Flux 900 LM Mode Four modes: 100% brightness(high), 50% brightness(middle), 20% brightness(low) and standby. constant currenct 1500mAh Function 100m water resistant Charging time 3.5 hours Compatibility diving Voltage 6-16V Battery   2*18650 Li-ion battery(included) or 4*123A battery(not included)  or 4*16340 battery(not included)    Others come with a hand strap for easy carrying and four waterproof rubber rings for fastening tightly.