This is a small electronic sight that installs in the groove of a .22 rifle. Features a red dot on the sight, simply align dot with your target for pinpoint accuracy, adjusts for windage and elevation, includes 3 volt lithium battery, imported. Red Dot Plastic Body. Lightweight plastic with 1x magnification with dot reticle, 22x33mm objective. Narrow 3/8" Groove for .22 or airgun mounts.