Feature A Flexible Reticle Selection: Multi-Reticle System with 3 MOA Dot, Crosshair and Circle Delivers Clear Aiming Across Shooting Situations A Ultra-Low Sight Profile: Only 7mm / 0.3" Body Profile Preserves Co-Witness Capability with Factory Pistol Iron Sights Without Obstruction A Smart Power Efficiency: Motion Sensor Auto-Shutoff System Significantly Extends Battery Runtime During Extended Outdoor Practice A Reliable Weather Protection: IPX6 Waterproof Construction Handles Heavy Rain Exposure During Outdoor Shooting Conditions A Broad Platform Compatibility: MOJ Footprint Compatible w/ the RMR Pattern Supports GlockA(R) 17/19 MOS, WaltherA(R) PDP and CZ P-10 OR Specification See our Terminology Guide for detailed explanations of each specification. Specification Details Magnification: N/A Window Lens Size: 22X26 mm Parallax: Free (