Seiko Cal. 5615 - 731

Released in 1984, the Cal. 5615 with design code 731 was part of Seiko's domestic market collection. With its 19mm lug width and 13.5mm profile, it sits comfortably on most wrists. [seikata-wm-f2b559fb3eb4]

Also known as: Sportsmatic, Flighty

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

13.5mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Burgundy

Jewels

33j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1984

Related Models

• Seiko 6395-969
• Seiko 3825-943
• Seiko 6112-729
• Seiko 6686-256
• Seiko 5682-287
• Seiko 3881-235
• Seiko 6191-217
• Seiko 5625-463
• Seiko 3876-201
• Seiko 7042-741
• Seiko 5686-740
• Seiko 6164-889