A super lightweight aiming solution for use with most rifles, shotguns, airguns and crossbows. High strength polymer housing in flat black color. This red dot sight provides optimum performance under most everyday sport shooting conditions. Intensity of the 3moa red dot has 5 level adjustment settings for proper contrast against full range of background light. Windage and elevation is adjustable with 1moa click value. Built-in rail mount has metal to metal clamping and works on both weaver and Picatinny type of rails. Magnification: parallax free 1x Eye relief: Unlimited Dot size: 3MOA Objective lens size: 24mm Rail type: Fits onto Weaver and M1913 Picatinny bases. Center height: 25mm Overall length: 78mm ( 3inch) Weight: 4.4oz. Power source: One CR1620 Lithium cell (included) Battery life: 200hours (with light intensity set at 3)