BESTSUN Cree XM-L T6 LED Waterproof Swimming Diving 1800 Lumen Headlamp Headlight BESTSUN Cree XM-L T6 LED Waterproof Swimming Diving 1800 Lumen Headlamp Headlight With the magnetically controlled switch, 3 Mode: high /low / strobe. Powered by 3 x AAA or 1 x 18650 battery ( not included) The light head with the stainless steel case can be rotated 90 degrees. With the high flexibility rubber light belt: comfortable head feel