The Sig SauerA(R) ROMEO4H + JULIET4 Red Dot/Magnifier Combo is the ideal kit for tactical operators looking for a reliable setup for both CQB and extended range engagements. The ROMEO4H red dot features a durable, shockproof, CNC-machined aircraft aluminum housing with precision-molded aspheric lens technology, which virtually eliminates aberration, reduces weight, and focuses images through the lenses for superior optical performance, while a high transmittance red notch reflector delivers unmatched brightness, eliminates distortion, and maximizes light transmission for optimal clarity. SpectraCoat(TM) coatings further enhance color fidelity and light transmission for optimal clarity. 4 integrated reticle options (dot, circle-dot, dot with holds, and circle-dot with holds) offer quick, customizable target acquisition, activated by MOTAC(TM) (Motion Activated Illumination System) technology, which automatically activates the illuminated reticle when it senses motion, and powers down the unit when the weapon is idle for reliable battery preservation. 12 user-selectable brightness settings (10 daylight; 2 night vision) ensure reliable visibility in all lighting conditions, while the included true co-witness QR mount and low-profile 1913 Picatinny mount readily attaches to most firearm platforms for maximum versatility. The side-loading battery compartment makes it easy to replace the CR2032 battery (included) without removing the sight or affecting zero and up to 50,000 hours of battery life on the lowest setting. The JULIET4 flip-up magnifier features a PowerCam 90deg Mount, which makes transitioning from close quarters to intermediate-ranged targets fast and easy by quickly flipping up when you're engaging with targets at extended ranges, and flipping down and out of the way when you need true 1x magnification for close quarter targets. The CNC-machined housing offers lasting durability and shockproof performance, while the quick release mount boasts built-in recoil lugs for repeatable zeroing. The dialect coated prism delivers optimal clarity. Backed by Sig's lifetime Infinite Guarantee(TM).