The Seiko Prospex Samurai SRPB55K1 is a must - have for all diving enthusiasts. Whether you're exploring the deep sea or just enjoying a swim at the beach, this watch is your perfect companion. It has a case diameter of about 43.8mm and a thickness of around 13.4mm, making it comfortable to wear. With features like 200M water resistance and Lumibrite hands, it's reliable and easy to read underwater. If you're someone who loves adventure and needs a durable watch, this one is for you.