Aqua Strobe LED features simple, reliable twist operation to activate this AA battery powered light, and yet also prevent accidental activation. Buoyant cone keeps the light pointed up whether underwater or at the surface. Attached to your BC, tank or anchor line, Aqua Strobe LED is sure to grab attention. Also suitable for attachment to PFD for paddlers and anybody else who prefers to keep their aquatic activities topside. Includes: Alkaline Battery, Velcro Strap & Lanyard