When Kintaro Hattori founded his company in 1881, he was just 21 years old. During his fifty years at the helm, Seiko became the leading watch company in Japan, with its own design and production facilities. This achievement was a direct result of his single-minded vision that Seiko should always be “one step ahead of the rest”.
Key Features:

• Automatic with manual winding capability
• 21,600 vibrations per hour
• 24 jewels
• Blue dial
• 60-minute track marked in five-minute increments
• Day/date calendar
• Luminous hands and markers
• Orange-tipped second hand
• Screwdown see-through caseback
• Stainless steel case
• Blue nylon strap with orange lining
• Water-resistant to 10 bar, 100 meters (330 feet)

Seiko 5 Sports SRPH31 Automatic 10 ATM Water Resistant 39.4mm Blue Dial Men's Watch Specifications:

• Caliber Number: 4R36
• Movement Type: Automatic with manual winding
• Jewels: 24
• Functions: Stop seconds hand function. Day/Date display
• Power reserve: approximately 41 hours
• Case Material: Stainless steel
• Case Size: Thickness: 13.2mm. Diameter: 39.4mm. Lug-to-lug: 48.1mm
• Crystal: Curved Hardlex
• LumiBrite: LumiBrite on hands and index(es)
• Band Material: Nylon
• Distance between lugs: 20
• Water Resistance: 10 bar
• Weight: 75.0g