The lightweight Pentax UD 9x21 Binoculars achieve excellent image performance for concerts, sports and traveling. Bright, Clear Viewing The Pentax UD 9x21 Binoculars have a single multi-coated lens, while other lenses are treated with a single-layer coating. It is designed to eliminate excessive reflection to deliver a bright, clear view of the subject free of flare and ghost images. Comfortable to Use The Pentax UD 9x21 Binoculars come equipped with a large focusing ring and diopter adjustment ring. They feature a non-slip design for easy operation. Lightweight Weighing around 195 g, these binoculars feature a compact design that fits easily in your hand. You can use an optional TP-3 tripod adapter to use these binoculars with a tripod.