Seiko Automatic Chronograph 50th Anniversary Limited Edition
Caliber 8R48, Automatic Chronograph
Chronograph up to 12 hours
Column wheel and vertical clutch systems
Vibrations: 28,800 vibrations per hour (8 beats per second)
Power reserve: 45 hours
Jewels: 34
Stainless steel case and bracelet with super-hard coating
Diameter: 41.0mm
Thickness: 16.0mm 
Water resistance: 10 bar
Magnetic resistance: 4,800 A/m
Limited editions of 1,000 worldwide