- Model: Romisen RC-C5- Aluminum body construction- Features a Cree?Q3 (WC) LED emitter- Powered by 1?x 18650 or?2 x?3.0V/3.6V CR123A (sold separately)- Accepted voltage input: 3V~8V- 160~200 lumens maximum brightness (manufacturer rated)- 1.5~2 hours estimated total runtime (manufacturer rated)-?800mA current?output measured?at LED?(manufacturer rated)- Regulated driver circuitry- Single-mode tailcap clicky switch- Glass lens with?aluminum textured/OP reflector                                                                                                                                Dimensions: 5 in x 1.18 in x 1.18 in<br />Weight: 3.95 oz