HD22H1 Mini 1×22 Red Dot Sight.  This lightweight mini red dot sight adopts fixed 1x parallax-free optical design with 22mm objective lens, delivering unlimited eye relief to support ultra-fast target acquisition without strict eye alignment. It features red & green dual dot reticle with 5 adjustable brightness levels, adapting flexibly to bright daylight and low-light dusk shooting environments. Crafted from solid aluminum alloy with matte anti-glare finish, built with integrated 20mm Picatinny mounting base for quick tool-free installation, and equipped with flip-up lens caps to protect the lens from dust, scratches and impact damage. Compact body and ultra-light weight greatly reduce front-end load during long-time use.