The Seiko Prospex Sumo SPB195J1 is designed for diving enthusiasts. Whether you're exploring the deep sea or just enjoying a day at the beach, this watch is your perfect companion. The 200m water resistance ensures it can handle any underwater adventure. It has a case size of 45mm and a thickness of 12.9mm, making it a substantial yet comfortable watch to wear. This watch is great for both professional divers and those who love water sports. With its automatic movement and long power reserve, you don't have to worry about constantly winding it up.