Part Number TRM1RE4 Item Weight 1 pounds Product Dimensions 5.2 x 1 x 1 inches Item model number TRM1RE4 Batteries: 2 Lithium ion batteries required. (included) Color Black Material Aluminum Power Source Battery-Powered Item Package Quantity 1 Type of Bulb LED Luminous Flux 533 Special Features 4 Functions: Momentary, Full Power, Power Save and Strobe Batteries Included? Yes Batteries Required? Yes Includes detachable pocket clip and a USB powered mountable charging base Charging base can be powered by the included 12V adapter or 120V converter 4 functions selectable through Mag Instrument's tail cap-switch-activated Quick Click mode selector; Momentary, Full Power, Power Save and Strobe Beam Distance of 178m 2m Drop Resistant