The Seiko Prospex SBDC101 is a great choice for divers and watch enthusiasts. It's perfect for underwater adventures and daily wear. With a horizontal case size of 40.5mm, a thickness of 13.2mm, and a length of 47.6mm, it's a well - sized watch. The 200m water resistance makes it suitable for deep - sea diving. The mechanical self - winding feature ensures long - lasting performance. Whether you're a professional diver or just someone who loves high - quality watches, this timepiece is for you.