This flashlight is 3 1/4" long, comes with key ring/ lanyard attachment. Black barrel with Green, Blue or Red tail cap. Color of tail cap matches the color of the light beam. Includes 1 "AAA" battery and packaged in a sleek presentation box. Red is the best light source for protecting a person's night vision by reducing eye strain. Great for aircraft cockpits, truck cabins, confined spaces. MADE IN U.S.A.