Two 3 Volt "CR 123A" lithium batteries with a shelf life of ten years.
Multi-function, push-button tactical tailswitch. One handed operation of momentary, variable intensity or strobe mode.
IPX4 rated design, three meter impact resistance tested, O-ring sealing protects against moisture. LED Solid State Power Regulation provides maximum light output throughout battery life. Also has "Anti-Roll" head.
L x W x D: 5.6" x 1.25" x .94" (14.22 x 3.18 x 2.39 cm)