Overview:HA-III Anti-Scratch Finish Takes both 2x CR123A & 1x 18650 batteries Accepted voltage input 3.6V ~ 9V Glass lens & orange-peel aluminum reflector cup Switch type: 1-mode clickie Ultrafire model number: C2 Phase-one test result: 5500 lux throw @ 1 meter (/- 500lux) with Ultrafire 2400m Ah 3.7V battery Specification: Dimensions: 5.2 in x 1.65 in x 1.65 in Weight: 4.23