The HS407C is an open reflex sight that’s parallax-free with unlimited eye relief. It features a Solar FailSafe, 2 MOA Dot Reticle and Shake Awake Technology. It is IP67 certified waterproof and CNC milled from 7075 aluminum. The HS407C also has MOA reticle brightness of 10 daylight & 2 night vision compatible settings, 1 MOA windage and elevation adjustment and a window size of 0.63 x 0.91 inches. Includes T10 L key, CR2032 battery, lens cloth and user manual.