These Romeo-MSR Gen II and Juliet3-Micro features high performance lens coatings including dielectric coated prism for excellent light transmission; Ultra-compact size and weight; The Romeo-MSR Gen II features parallax-free optical design, Precise 2 MOA Dot, 1.41 sight-height for absolute cowitness; 90 deg. push-button flip-to-side magnifier mount; Rotary illumination control featuring 10 daytime and 2 NV settings; 35,000 hr runtime with common CR2032 battery; Dependable IPX-7 waterproof and fog-proof performance; The Juliet3-Micro features aircraft-grade CNC aluminum housing ensures a lifetime of reliable service; 90 deg. push-button flip-to-side magnifier mount; Dependable IPX-7 waterproof and fogproof performance; Bikini Lens Cover included; Infinite Guarantee; Bikini Lens Cover, and spacers to achieve (3) sight heights: absolute co-witness 1.41″, 1.54″ and lower 1/3rd co-witness 1.63″ sight heights