The super-slim design of these unique flashlights are designed to fit into your pocket or purse easily, plus a magnetic strip on the back lets you hang them on any steel surface for easy access. The set includes 4 flashlights; 2 black, one blue and one red. Each has 2 bright LED lights, is water-resistant and includes a button cell battery. Plastic and electronics. Each is approx. 5"L x 1/2"D. Set of 4.