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SIG Sauer ROMEO4S Red Dot Sight - 1 MOA Ballistic Circle Plex
Features
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1 MOA Red Dot with Ballistic Circle Plex Reticle – Offers both precision and speed by combining a crisp center dot with a surrounding circle for fast target acquisition and holdovers.
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Hybrid Solar and Battery Power – Runs on both solar power and a CR2032 battery, offering more than 100,000 hours of continuous runtime.
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MOTAC™ (Motion Activated Illumination) – Automatically turns on when motion is detected and powers down when idle to save battery.
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12 Illumination Settings – Includes 10 daylight settings and 2 night vision-compatible modes for all lighting conditions.
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TruHold™ Lockless Zeroing System – Twin adjustment springs ensure zero retention under recoil and rough handling.
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High-Performance Optical Coatings – Ultra-clear lens coatings for excellent light transmission and minimal distortion.
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7075-T6 Aluminum Housing – Rugged construction with integrated steel shroud to protect the optic under extreme use.
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Waterproof and Fogproof – IPX-7 rated for submersion up to 1 meter; nitrogen purged to prevent internal fogging.
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Quick-Detach Mount – Comes with co-witness height mount and low-profile option for flexible setup.
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Unlimited Eye Relief – Allows rapid target engagement without concern for sight alignment.
Technical Specifications for SIG Sauer ROMEO4S Red Dot Sight – 1 MOA Ballistic Circle Plex
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Specification
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Details
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Manufacturer
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SIG Sauer
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Model / MPN
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ROMEO4S / SOR43022
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SKU
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SOR43022
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UPC
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798681567874
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Magnification
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1×
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Objective Lens Diameter
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20 mm
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Reticle
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1 MOA Red Dot with Ballistic Circle Plex
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Brightness Settings
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12 (10 daylight / 2 night vision)
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Battery Type
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CR2032 (side-loading) with solar panel
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Battery Life
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Over 100,000 hours
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Adjustment per Click
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0.5 MOA
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Windage / Elevation Range
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±50 MOA
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Eye Relief
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Unlimited
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Housing Material
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7075-T6 Aluminum with steel shroud
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Waterproof Rating
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IPX-7 (submersible to 1 meter)
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Fogproof
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Yes – nitrogen purged
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Weight
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Approx. 7.6 oz (215 g)
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Mount Type
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Quick Detach – Co-Witness & Low Mounts
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Finish
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Matte Black
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Country of Origin
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USA
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Warranty
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Infinite Guarantee (housing); 5 years (electronics)
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Included Accessories
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SIG Sauer ROMEO4S Red Dot Sight – 1 MOA Ballistic Circle Plex
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Quick-Detach Co-Witness Mount
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Low-Profile Mount
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CR2032 Battery (pre-installed)
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Protective Steel Shroud
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See-through Flip-Up Lens Covers
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User Manual
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Warranty Card
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