"The Osight C Open Reflex Sight combines a wide field of view, side-loading battery tray, and multiple reticles into one well-rounded optic. Featuring a 0.95x0.75"" window with advanced anti-reflective coatings, the Osight C provides maximum light transmission and a greater sight picture for fast target acquisition and faster follow-up shots. The side-loading battery tray provides simple battery replacement without requiring removal or re-zeroing. For versatile targeting, the Osight C features multiple reticles: choose the 3 MOA dot, 32 MOA circle, or both at the same time depending on your mission. 8 daylight and 2 night-vision brightness settings provide the ideal aim point for any light conditions. The optic features the industry-standard 407c/507c footprint to fit on a wide variety of full-sized and compact pistols, and can be adapted to fit rifles with the addition of a Picatinny mount (not included). Motion activation technology brings the unit to life with the slightest motion and shuts down after 3 minutes to preserve battery. CNC-machined aircraft aluminum construction provides superior durability. 0.95x0.75"" window provides a wide field of view Fully multi-coated with anti-reflective coatings for enhanced light transmission and clarity Side-loading battery tray for easy battery swaps Multiple reticles: 3 MOA dot, 32 MOA circle, or both 7075 aluminum construction Industry-standard 407c/507c footprint Motion activation technology"