The Casio G-Shock Frogman is the ultimate high-end watch for divers. This timepiece, which is made in Japan, has many great features, like a depth gauge and digital compass. It’s both shock and water resistant for an extremely durable piece you can wear anywhere you go. Given its rugged features and fine Japanese workmanship, this watch is an essential piece of scuba-diving equipment, right alongside your mask and swim fins.