The different models of A B C D E are only different in appearance, the functions are exactly the same.

• 【SHAKE WAKE】 Providing CR2032 battery stands up to 20,000 hours at the lowest brightness setting. Feature motion-sensing illumination tech to help save battery life. After 2 minutes without motion, illumination shuts off. Even the slightest movement will wake red dot up to the previous brightness setting.
• 【12X ILLUMINATION SETTINGS】 12 Red dot Illumination settings provide optimal visibility in any light conditions, allowing you to achieve fast target acquisition. 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.
• 【FULLY MULTI-COATED LENS】 Red dot sight for pistol, with multi-coated scratch-resistant lens provides bright and clear views and increases light transmission during low light situations. Sealed with O-rings and nitrogen purged ensures waterproof and fog-proof performance.
• 【TWO MOUNT OPTIONS】The red dot sight comes with a pistol Mount and a Picatinny mount(RMR footprint).
• 【MORE ACCURATE】Features adjustable elevation and windage adjustments to help you achieve pinpoint accuracy, parallax corrected & unlimited eye relief.
• 【MORE DURABILITY 】 This Red dot scope adopts rugged aviation-grade aluminum alloy housing. Matte black anodized finish resists scratches. Ultra-compact and lightweight design can withstand great recoil.