This Polish Military Signal Light delivers useful illumination for a wide variety of situations. Metal clip can be used as a hanger in your tent or shed. Or as a stand on a picnic bench or work table. 3-color filtering was originally used for sending silent messages between far-flung units. On the trail, this Flashlight can be used for reading maps, signs, logbooks and more. Designed to be used with a long-lasting "flat-pack" style 3LR12 lantern battery which is more common in Europe, but still easy to find online. Switches between white, green and red light Metal body, plastic lens Reflector back Includes metal clip hanger/stand Uses a 4.5V 3LR12 lantern battery (not included)