Camouflage LED Pen Light, 1/2W Green LED, 5 Lumen Output, Push Button On/Off Tail Switch, Corrosion & Water Resistant Aircraft Grade Aluminum Body, Unbreakable Polycarbonate Lens, Unbreakable Pocket Clip, Includes Holster, Uses Two "AAA" Alkaline Batteries, For Replacement Batteries Use True Value #196-777 Or #254-508.