The 1550.6 PCm Series Mighty Mini Halogen Dive Lite 6-Pack with Batteries from Ikelite is a set of identical compact underwater halogen lights. 2 Black, 2 Blue and 2 Yellow lights are included. Featuring a light output of 7.2 W and a burn time of 1.5 hr, these lights are also depth rated down to 295' (90 m). Each light runs on 4 AA cell Alkaline or Nickel Metal Hydride / NiMH batteries, for a total of 24 batteries for the set (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. This pack comes with a display case.