<https://opticsandammo.com/product/trijicon-rm07-rmr-reflex-sight-matte-black-mfr-rm07/#product>
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"The matte black RM07 RMR Reflex Sight from Trijicon provides optimum red-dot visibility against the target for rapid target acquisition and precise shot placement. Designed with longevity and repeatability in mind - the RMR (Ruggedized Mini Reflex) is waterproof to 65' and features a durable aluminum housing with a scratch and corrosion-resistant hard-anodized finish, and hard-coated window to ensure long-term reliable service.\r\n\r\nThis version of the RMR is configured with an adjustable-brightness 6.5 MOA red-dot reticle that's powered by a standard CR2032 battery. Audible clicks allow for easy and quick windage and elevation adjustments.\r\n\r\n    6.5 MOA red dot reticle \r\n\r\n    LED sight powered by one included standard CR2032 battery \r\n\r\n    Forged aluminum housing with matte black scratch and corrosion-resistant hard-anodized finish \r\n\r\n    Hard-coated optical glass window helps prevent scratches and scouring \r\n\r\n    Eight brightness levels, with auto or manual adjustment \r\n\r\n    Waterproof to 65'"
<https://opticsandammo.com/product/trijicon-rm07-rmr-reflex-sight-matte-black-mfr-rm07/>