Offering advanced optical performance in a lightweight compact design the orros 10x25 binoculars from vanguard have high quality bak4 prisms and multi coated lenses to deliver crisp detailed images they are 100 waterproof and nitrogen charged to ensure that they are fog proof and have no slip armour to allow them to be used no matter the weather conditions at just 115 x 120mm the compact vanguard orros 10x25 binoculars are perfect for carrying in your pocket and using for hours on end in