Super-compact and lightweight design The PENTAX UD series impresses with a particularly compact body that is no bigger than the palm of your hand and weighs just approx. 195 grams. This makes the PENTAX UD 9X21 and UD 10X21 the lightest PENTAX binoculars ever. With the design developed exclusively for the UD series, the two binoculars can be held effortlessly in the hand and taken along on any occasion, e.g. for nature observation while travelling and hiking or at sporting events, concerts and theatre performances. Clear and bright view Multi-coated lenses prevent strong reflections and provide a bright, clear view of the subject while minimising flare and ghosting. The PENTAX UD 10X21 has a multi-coated lens, while the other lenses have a single-layer coating.