Settings 1-3 are suitable for dim or rainy environments while settings 4-9 are better for a bright or sunny day. Settings 10-12 are good for middle days. Discover red dot sights featuring multi-reticle systems and shake awake technology. Perfect for rapid target acquisition and everyday carry The multi-coated scratch-resistant lens provides bright and clear views and increases light transmission during low light situations. we have been engaged in the outdoor hunting industry for 9 years and we adhere to the technological innovation concept of Let science and technology burst into power, adhering to customer needs as the core, providing customers with high-quality products and satisfactory services. M5S Red Dot Sight 2 MOA Reflex Scope Bushnell RXC-200 Compact Reflex Sight, 6 MOA Red Dot | Sportsman's Guide Sealed with O-rings and nitrogen purged ensures waterproof and fog-proof performance. Providing genuine CR2032 battery stands up to 20,000 hours at the lowest brightness setting. Offers 2 height 21mm rail mount options to meet your need. Shake Awake Red Dot Red Dot Sight, 3 MOA Red Dot Scope With Picatiinny Rail Mounts, Adjustable Brightness Parallax Free Reflex Sight, Shockproof Scratch Resistant Amber Lens Riflescope, Tactical Optic Scope Rifle Red Dot Sight With Motion Sensor Features adjustable elevation and windage adjustments to help you achieve pinpoint accuracy, parallax corrected & unlimited eye relief.