Pocketman Diving Flashlight, CREE T6 LED Submarine Light Waterproof Underwater Flashlight Torch Lamp,1400lumens bright Lamp, for outdoor under water sports Super bright LED, lifespan &gt;50,000 hours Safe & Waterproof: with a IPX8 waterproof level the light can be submerged up to 80 ft.Lanyard and velcro wristband included. 3 Bright LED Light Modes: two brightness levels, a strobe light Battery: 1 X 18650 3.7V Battery (Not included) Multifunction: Great to use for diving to see the many things underwater that we normally cannot see, or use while swimming normally to see through more shallow waters.