Seiko Prospex SRPH55

Prospex U.S. Special Edition
Celebrates Seiko Prospex's ongoing efforts to promote ocean exploration and conservation
Automatic diver with manual winding capability
21,600 vibrations per hour
Power reserve: approximately 41 hours
24 jewels
Black ceramic unidirectional rotating elapsed timing bezel
Intricately patterned brown dial inspired by the turtle shell
Day/date calendar with day in both English and Kanji
LumiBrite hands and markers
Sapphire crystal with anti-reflective coating on the inner surface
Screwdown crown
Screwdown Special Edition caseback with sea turtle image
Case diameter: 45.0mm
Stainless steel case and bracelet
Additional brown silicone strap
Water-resistant to 200 meters (660 feet), Diver's Watch. Follows ISO standards and is suitable for scuba diving
Caliber 4R36