Holosun 1x 0.9x0.63 in Reflex Red Dot Sight Red 3 MOA Dot Black. Featuring a crisp red 3 MOA dot it delivers enclosed-optic durability in a streamlined carry-ready form. A forward-facing light-sensor photodiode automatically adjusts brightness as lighting conditions change while the enclosed housing protects the optic from dust rain and debris to ensure consistent performance in real-world environments. Powered by a side-tray CR1620 battery delivering up to 50000 hours of runtime on setting six the EPS-CORE-RD3 stays ready with Shake Awake technology and secure with Lockout Mode to prevent accidental brightness changes. Built around the RMSc footprint for direct mounting on popular slimline slides the EPS-CORE-RD3 delivers full-size viewing performance in a compact purpose-built package. Specifications for Holosun EPS-CORE-RD-3 1x 0.9x0.63 in Reflex Red Dot Sight: Manufacturer: Holosun Color: Black Fabric/Material: 6061 Aluminum Magnification: 1 x Objective Window Size: 0.9x0.63 in Reticle: 3 MOA Dot Illumination Type: LED Illumination Color: Red Eye Relief: Unlimited Adjustment Click Value: 1.5 MOA Emitter Type: Enclosed Parallax: No Battery Type: Lithium Metal CR1620 Water Resistance Level: IPX-8 Weight: 1.4 oz Features of Holosun EPS-CORE-RD-3 1x 0.9x0.63 in Reflex Red Dot Sight Full-size EPS viewing lens in a compact RMSc-footprint housing RMSc footprint for direct mounting on slim and subcompact pistol slides 3 MOA dot Enclosed optic design protects against dust debris and moisture Forward-facing light sensor for automatic brightness adjustment Shake Awake technology for motion-activated power management Lockout Mode prevents accidental brightness changes CR1620 side-tray battery with up to 50000 hours of runtime on setting six Manual brightness control with memory function 8 daylight + 4 night-vision compatible brightness settings Rugged 6061-T6 aluminum housing with hard-anodized finish IPX8 waterproof rating and 5000G vibration resistance Package Contents: Holosun EPS-CORE-RD-3 1x 0.9x0.63 in Reflex Red Dot Sight Multi Tool Lens Cloth User Manual Holosun EPS-CORE-RD-3: EPS-CORE-RD-3 1x 0.9x0.63 in Reflex Red Dot Sight Red 3 MOA Dot Black