Ikelite PCa Series 1778 All Around LED Dive Lite, 205 Lumens, Over 7 Hours Run Time, Yellow 300 ft (90 m) depth rating. 205 lumen concentrated spot beam. Over 7 hours burn time. Accepts 6 AA NiMH or Alkaline batteries. Dimensions 2.5 x 4 in (63 x 101 mm).