Seiko Prospex Mechanical Automatic Scuba Diver's 200M Grey Textured Dial Sumo SPB323

The Seiko Prospex Grey Sumo SPB323, also known as SBDC177 and SPB323J1, is more than a diver’s watch — it’s a story told in steel and light. At first glance, the gradient grey dial draws you in, shifting from smoky charcoal at the edges to a luminous silver glow at its heart. Subtle horizontal waves ripple across the surface, evoking the currents of the deep ocean. Luminous markers and polished hands stand boldly against this backdrop, ensuring clarity whether you’re beneath the waves or under city lights. The ceramic bezel frames the dial with a glossy black ring, adding both strength and elegance to the design.

The case carries the unmistakable “Sumo” legacy — broad, sculpted lugs and a confident wrist presence that balances power with refinement. Crafted in stainless steel and protected by sapphire crystal, it’s built to endure the rigors of the sea while maintaining a sleek, modern profile. Inside beats Seiko’s reliable 6R35 automatic movement, offering a 70‑hour power reserve, hacking seconds, and manual winding for precision and control. With 200M water resistance, this Prospex diver is ready for professional use, yet its quiet sophistication makes it equally at home at a dinner table.

Owning the SPB323 is not just about wearing a watch; it’s about carrying a piece of Seiko’s heritage. It resonates with collectors who appreciate Japanese craftsmanship, and with adventurers who demand reliability. Available now at Watchoutz.com, Hong Kong’s trusted Japanese watch retailer with over 13 years of reputation, this Grey Sumo is a horology treasure waiting to be discovered. Fast, secure international shipping ensures that wherever you are, the spirit of Seiko Prospex can be on your wrist.

SPB323 Specification:

Movement
Caliber: 6R35
Automatic with manual winding capacity
Accuracy +25 to -15 seconds per day
Duration: Approx. 70hrs
Jewel: 24