The Sig Sauer ROMEO1PRO Red Dot Sight is a high-performance, open-reflex sight designed for modern semi-automatic pistols. Featuring a molded glass aspheric lens with high-performance coatings, it ensures superior light transmittance and zero distortion. The upgraded point-source emitter provides exceptional brightness with 12 settings (10 daytime/2 night vision), and a runtime exceeding 20,000 hours. Its aircraft-grade CNC aluminum housing guarantees durability, while the included ruggedized protective steel shroud offers extreme resilience. The TruHold Lockless Zeroing System maintains zero shot after shot, and the MOTAC (Motion Activated Illumination System) conserves battery life by powering the sight on when motion is detected and off when idle. A durable miniature open-reflex red dot sight that's an ideal sighting solution for the modern semi-automatic pistol. Key Points Molded glass aspheric lens with high-performance coatings for clarity and zero distortion. Upgraded point-source emitter with 12 brightness settings for various lighting conditions. TruHold Lockless Zeroing System ensures consistent zeroing after recoil. MOTAC technology conserves battery by activating on motion detection. Aircraft-grade CNC aluminum housing with protective steel shroud for enhanced durability. IPX-7 rated waterproof and fogproof performance for reliable operation in adverse conditions. Specifications Magnification: 1x Color: Flat Dark Earth Finish: Matte Objective Lens Diameter: 30 mm Reticle:6 MOA Red Dot Brightness Settings: 12 (10 Daytime / 2 Night Vision) Battery Type: CR1632 Battery Life: Over 20,000 hours Adjustment Increments: 1 MOA Total Elevation Travel: 100 MOA Total Windage Travel: 100 MOA Dimensions: Length: 46.5 mm; Width: 31.7 mm; Height: 27.4 mm Weight: Approximately 1 oz Waterproof Rating: IPX-7 (submersible up to 1 meter) Housing Material: Aircraft-grade CNC Aluminum Mounting Footprint: SIG SAUER PRO RX Manufacturer: Sig Sauer Manufacturer Part Number: SOR1P103 Model: Romeo1 Pro Dimensions (inches): 2.45 x 3.85 x 5.90 Side Parallax Adjustment: No Locking Turrets: No Includes Rings: No Condition: New Reticle: Red Dot Type: Reflex Usage Context Ideal for law enforcement, military personnel, and competitive shooters, the Sig Sauer ROMEO1PRO Red Dot Sight offers rapid target acquisition and reliable performance in various operational scenarios. Its durable construction and advanced features make it suitable for both professional and recreational use. Comfort & Fit Designed to seamlessly integrate with SIG SAUER pistols featuring the PRO RX footprint, including models like the M17, M18, and P320 series, the ROMEO1PRO ensures a low-profile fit that maintains the firearm's balance and ergonomics. Technology & Materials Constructed from aircraft-grade CNC aluminum, the ROMEO1PRO is built to withstand harsh environments. The molded glass aspheric lens with high-performance coatings delivers clear visuals, while the TruHold Lockless Zeroing System and MOTAC technology enhance performance and batt