Fenix PD20 CREE Q5 Mini LED Flashlight, Black, 180 Lumens, Uses 1 X CR123A Battery 3 inch length, less than 3 ounce weight, amazing 6 output levels Will reach over 140 meters (460 ft) using one 3v cr123a batteries (lithium)--not included Unbelievable compact 3 ounce body design is made of durable aircraft-grade aluminum