1. Multi-coated optics
2. 100% waterproof / fogproof / shockproof construction
3. 11 position rheostat red Illuminated
4. Red&Green dot Designed for quick targeting
5. Parallax Setting 100 yds
6. Compatible with 21mm base
7. ISO9001 certificate of registration
8. 88% light transmission
9. Flip-up lens covers to protect the lenses from dirt or dust
10. no battery