GPO's flagship binoculars, the Passion HD line features world-class components and features which are aimed at serious sports optics users. Externally, the body sees a durable, sealed magnesium chassis, multi-texture body armour that provides both protection and grip, GPO's proprietary ""PASSIONdrop"" hydrophobic coating, aluminium eyecups and a central focusing wheel with an integrated locking diopter correction mechanism. Optically, the series feature a Schmidt Pechan roof prism system. Phase correction coatings prevent phase shift deliver an impressively high-resolution image, whilst dielectric mirror coatings reflect more than 99% of the light across the full spectrum, boosting image brightness and overall quality. From the strong and durable exterior to the impressively high-specification interior, these binoculars are a truly premium product that will provide you with the highest possible image quality.