The Firefield RapidStrike Red Dot Sight features advanced Shake Awake technology with a precise 3 MOA red dot reticle in a compact 1x21mm housing designed for fast target acquisition.Firefield RapidStrike 1x21 Red Dot Sight3 MOA red dot reticle for precision aimingShake Awake motion-activated power systemCR2032 battery powered for reliable operationPicatinny rail mounting systemCompact dimensions: 3.45 x 3.75 x 4.90 inchesIdeal for tactical applications hunting and competitive shooting where quick target engagement and battery conservation are essential for optimal performance.