Eotech EXPS31Tan HWS EXPS31T Tan | 1X 1 MOA Red Dot The EXPS3 offers True 2 eyes Open Shooting And a 7 mm raised Base That Still Allows For 1/3 Iron Sight Co-Witness. It features Easy-To-Adjust Side Buttons And An Adjustable, Locking, Quick-Detach Lever For Easy Attachment And Removal. It's Night Vision-Compatibility makes It a Versatile Choice For Day Or Night Hunting. Night Vision Capable For Gen I-III+ devices. Features Auto Shut Down at 8 hours. Magnification: 1X Objective: 1.20"/30 mm X 0.85"/23 mm Field Of View: 30 yds at 100 yds Eye Relief: Unlimited Dot Size: 1 MOA Length: 3.80"/96.5 mm Weight: 11.20 Oz/317.5 G Battery Size: Cr123 Reticle: 1 MOA Red Dot Adjustment Size: 0.50 MOA Proofs: Water/Weather Resistant Optic Coating: Anti-Reflection Windage Elevation: Adjustable