SEIKO PROSPEX KING SAMURAI SAVE THE OCEAN SRPH43K1

The Seiko Prospex SRPH43K1 King Samurai Save the Ocean is an Asia-exclusive automatic diving watch released in 2021. It features a "King Samurai" case design with sharp, angular edges and a distinctive blue waffle-textured dial. 

Key specifications

• Case: Stainless steel with a zirconia ceramic bezel
• Case dimensions:
  • Diameter: 43.8mm
  • Thickness: 12.8mm
  • Lug-to-lug: 48.7mm
  • Distance between lugs: 22mm
• Movement:
  • Caliber: 4R35, automatic with manual winding capacity
  • Jewels: 23
  • Power reserve: Approximately 41 hours
• Crystal: Sapphire crystal with an anti-reflective coating on the inner surface and a magnifier over the date window.
• Water resistance: 200m / 660ft diver's watch.
• Band: Blue silicone strap.
• Weight: 127g.
• Features:
  • Unidirectional rotating bezel
  • Screw-down crown
  • Screw case back
  • LumiBrite on hands, indexes, and bezel
  • Date display
  • Stop second-hand function 

• Save the Ocean theme: The watch was inspired by the ocean and coral reefs, featuring a vibrant orange tone on the bezel markings that evokes coral.
• High legibility: The combination of the blue dial, orange bezel numerals, and LumiBrite on the hands and indexes provides high visibility.
• Case construction: The angular cuts of the stainless steel case give it its "Samurai" nickname. The zirconia ceramic bezel provides excellent durability.