Seiko Prospex U.S. Special Edition SRPH57

The SRPH57 is a Seiko Prospex U.S. Special Edition built around the specifications listed below.

Key specifications

• Automatic Seiko Caliber 4R36 with manual winding
• Approximately 41-hour power reserve
• Black ceramic unidirectional bezel
• Patterned turquoise dial with LumiBrite hands and markers
• Day/date display with English and Kanji day wheel
• Sapphire crystal with inner anti-reflective coating
• Screw-down crown and special-edition caseback
• Stainless-steel bracelet plus green silicone strap
• 200m water resistance; ISO-compliant diver
• Special Edition Prospex diver built around a turquoise turtle-shell-inspired dial and black ceramic elapsed-time bezel
• The SRPH57 combines Seiko’s 4R36 automatic movement with a sapphire crystal, steel bracelet, and an additional green silicone strap