Seiko Cal. 5631 - 566

This Spring Drive model from 1991 features a 37mm Hardlex-Coated Steel case. It features a Black dial protected by a Acrylic crystal and offers 130m of water resistance. [seikata-wm-f7dda992d180]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

10.2mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

130m

Dial Color

Black

Jewels

36j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1991

Related Models

• Seiko 0773-937
• Seiko 0786-721
• Seiko 3875-439
• Seiko 0725-277
• Seiko 0714-311
• Seiko 6285-855
• Seiko 6221-941
• Seiko 5659-460
• Seiko 5286-382
• Seiko 6258-528
• Seiko 0737-578
• Seiko 5616-134