The Zeiss Diavari VM/V Rifle Scope features an advanced optics system that provides enormous optical performance and sturdiness with minimal weight and short overall length. Key features of the Zeiss Diavari include outstanding optical quality, very wide fields of view, long eye relief and 1/4 MOA windage and elevation adjustments, all in a lightweight, compact and recoil proof package. Waterproof, fogproof and shockproof. Covered by the Zeiss Limited Lifetime Warranty. Powered by a CR2032 3V lithium battery..