Tektite Multifunction LED 3500 Strobe Light - Orange high intensity 10-Watt Tektite Multifunction LED 3500 Strobe is double O-ring sealed, depth rated to {500 ft | 152 m}, will run 100 hours on a set of three C-cell batteries and can also accept rechargeable Ni-Cad Batteries. Multifunction modes: a steady on mode for use as an emergency backup or area light plus the flashing on/off strobe mode. Visible at the surface for several miles/kilometers at night, the initial flash rate is 120 flashes per minute with fresh alkaline batteries. Features durable military tough ABS and LEXAN construction, twist on switch with non-slip grip, safety orange color body with sturdy attachment point for snap or lanyard. At {9.25 in | 23 cm} long this strobe is too big to fit in most pockets. Three C-cell alkaline batteries and a { 15 in | 38.1 cm } Velcro strap are included, along with a limited LIFETIME Warranty from TekTite. 792348356245