The HWS was chosen over competitors for its superior speed, extra widefield of view, the dual use reticle and rugged design. The HWS providesincredibly fast and accurate target acquisition under any lightingconditions, offers outstanding night vision compatibility, utilizesstandard AA batteries and is now submersible in water to a depth of 33-feet. SPECIFICATIONS:Mfg Item Num: 552XR308 Magnification :1xObjective :1.20" x 0.85"Field of View :30 yds @ 4" Eye ReliefEye Relief :UnlimitedDOT Size :1 MOA DOTLength :5"Weight :10.9 ozFinish :BlackBattery :AA