Binoculars with a magnification of 4x, monoculars separated into two, telescopes connected in series, and binoculars that can be used for three purposes. Full multi-coating, phase coating, and dielectric multilayer coating suppress flare and ghosts, ensuring an easy-to-see and bright field of view. A waterproof structure equivalent to JIS protection class 7 that can be washed with water. (Water resistant to 1m. Cannot be used underwater) High-quality design that uses a lot of metal. Includes a neck strap for binoculars and a special strap that can be split into two hand straps for monoculars.