Holosun DRS NV Digital Rifle Sight Night Vision 101115 This flashlight has a runtime This flashlight has a runtime of 230 hours when using the 5 lumen Eco mode Chest pockets with dual access utility compartments with hook and loop closure for easy access and storage High impact melamine buttons Dual communication wire access openings in side seams keep wires obscure Flex underarm mesh vents provides body heat ventilation and increased range of motion The newly enhanced Dutymaxx shirt now offers technology such as Nano Fluid Repellency that keeps wearer dry and comfortable DRS NV features an LED MRS (Multi Reticle System) digital reticle options (for use with the digital night vision overlay)