Ba K-4 prisms & fully coated lenses Waterproof Fog proof & Nitrogen purged 20 x magnification Designed for the space conscious outdoor enthusiast & bird watcher the new ultra compact Barr amp Stroud Sprite monocular is possibly the best value in the market today. Featuring optical performance equal to or better than any competitors product line the Barr amp Stroud Sprite is waterproof & features rugged armoured construction for years of performance. Designed to be used single handed or on a tripod with equal ease. It features a soft rubber eyecup which enables the monocular to be used with or without spectacles without damaging them. All Sprite monoculars feature Ba K-4 prisms & fully coated lenses to provide optical performance that is equal to or better than anything in its class. Polycarbonate construction All Sprite monoculars are manufactured from lightweight polycarbonate which reduces overall weight & makes it extremely rugged & durable. Rubber armour covered A rugged rubber armour covering quiets down bumps & protects your Sprite monocular from abrasions & damage from regular use. Waterproof Fog proof amp Nitrogen Filled All Sprite monoculars are waterproof fog proof & nitrogen purged to ensure many years of performance. Accessories All Sprite monoculars come supplied with case & table top tripod. Specifications Optical system Roof prism Coating Fully multi coated Magnification 20 x Objective dia 50mm Field of View 50m 1000m Brightness 6.25 Dimensions 162 x 80 x 62 mm Weight 410g