The 1580.00 PC Series Pocket Perfect Halogen Dive Lite w/o Batteries (Black) from Ikelite is a compact underwater halogen light. Featuring a light output of 7.2W and a burn time of 4 hr, this light is also depth rated down to 295' (90 m). It runs on 4 C cell alkaline or nickel metal hydride / NiMH batteries (not included). A unique lock ring slides effortlessly to open the light for battery changes, and secures with a snap to prevent accidental flooding. There is also a locking switch for storage.