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:

• Inspired by vintage field/aviator style
• Automatic with manual winding capability
• 21,600 vibrations per hour
• 24 jewels
• Black dial
• 60-minute track on the outer dial
• 13-24 hour military time scale on inner dial
• Red-tipped second hand
• Day/date calendar
• Luminous hands and markers
• Screwdown see-through caseback
• Stainless steel case and bracelet
• Tri fold push-button release clasp
• Water-resistant to 10 bar, 100 meters (330 feet)

Seiko 5 Sports SRPJ81 Automatic 36mm 10 ATM Water Resistant Men's Watch Specifications:

• Caliber Number: 4R36
• Movement Type: Automatic with manual winding
• Power reserve: Approx. 41 hours
• Jewels: 24
• Functions: Stop seconds hand function. Day/Date display
• Power reserve: approximately 41 hours
• Case Material: Stainless steel
• Case Size: Thickness:12.5mm. Diameter:36.4mm. Lug-to-lug:44.4mm
• Crystal: Curved Hardlex
• LumiBrite: LumiBrite on hands and index(es)
• Clasp: Three-fold clasp with push button release
• Distance between lugs: 18
• Water Resistance: 10 bar
• Weight: 114.0g