The second generation Liberator incorporates some handy new features. Shake N Wake motion sensing auto on/off, super-efficient crisp 2 MOA dot emitter; and a greatly improved battery life all combine to provide a significant performance upgrade over gen 1. It sports 2 night vision and 8 daylight bright illumination settings. While most red dots come with just one low profile mount, the Liberator II ships with both a low profile and an absolute co-witness height 1913 MIL-STD picatinny mount. This optic is small and light, but also rugged and waterproof. This little guy will handle 12 gauge shotguns and .308 rifles and keep on truckin'. As always from Swampfox, the glass inside and out has premium clarity and multiple coatings: anti-scratch, anti-glare, anti-fog and hydrophobic.