The Holosun ARO Evolution Enclosed Red Dot Sight features an innovative solar gold reticle system with dual reticle options and CR2032 battery backup for reliable performance in any lighting condition.Holosun ARO Evolution Enclosed Red Dot SightSolar gold reticle with battery backup (1-CR2032)Dual reticle options: 2 MOA dot or 65 MOA circle dotPicatinny/Weaver rail mounting systemBlack matte finish for reduced glareCompact dimensions: 2.65 x 3.65 x 4.75 inchesLightweight at 5.56 ouncesPerfect for tactical applications hunting and competitive shooting this enclosed design provides superior durability and weather resistance while the solar charging capability ensures extended operation in the field.