The Seiko Prospex SSC615P1 is an ideal watch for divers and water sports enthusiasts. Whether you're exploring the deep sea or just swimming in the pool, this watch can handle it with its 200m water resistance. It's also great for those who love outdoor activities. With a case diameter of about 43.5mm and thickness of 13.8mm, it has a substantial yet comfortable feel on the wrist. The solar - powered movement means you don't have to constantly change the battery, making it convenient for long - term use.