Eotech XPS2-0 65/1 1x 1.2"x0.85" Obj Unlimited Eye Relief 1 MOA DOT Black Shortest model sight yet. This sight is smaller than the former N-cellbattery sight (511/551) and runs on a single 123 battery. It also has alonger battery ife than the N-cell style sights. With the single batteryconfiguration, the XPS allows more rail space than ever, leaving more room for rear iron sights or magnification. Smaller, lighter and always fast.This model is not night vision compatible. SPECIFICATIONS:Mfg Item Num: XPS20 Category: OPTICS - RED DOT SCOPES Magnification :1xObjective :1.20" x 0.85"Field of View :30 yds @ 4" Eye ReliefEye Relief :UnlimitedDOT Size :1 MOA DOTTube Diameter :Length :3.5"Weight :8.0 ozFinish :BlackBattery :CR123