The Seiko Marinemaster Prospex SPB187J1 is perfect for divers and watch enthusiasts. You can wear it while diving, swimming, or just as a stylish everyday accessory. With a case diameter of 42mm, thickness of 12.5mm, and length of 48.8mm, and weighing 186g, it's a comfortable fit on your wrist. Its 200m water resistance allows you to explore the underwater world with confidence.