Inspired by Seiko’s first precision chronographs, developed for international sporting competitions in 1964, and its 1969 introduction of the world’s first automatic chronograph

Automatic with manual winding capability

28,800 vibrations per hour

Power reserve: approximately 45 hours

34 jewels

Chronograph measures up to 30 minutes of elapsed time in 1/8-second increments

Column wheel and vertical clutch mechanism allows for smooth, stutter-free movement of the chronograph hand while providing longer wear and efficiency, and maintaining the power reserve better during chronograph operation

Charcoal gray dial

Beige LumiBrite hands and markers

Dual curved sapphire crystal with anti-reflective coating on the inner surface

Screwdown see-through caseback

Case dimensions: Thickness – TKmm; Diameter – 42.5mm; Length – TKmm

Stainless steel case and bracelet with super-hard coating

Tri-fold push button release clasp

Water resistant to 10 bar, 100 meters (330 feet)

Caliber 8R46