Seiko Cal. 5631 - 180

The Seiko 5631-180 represents an important milestone in Seiko's 1982 lineup. The Fixed bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-8528c931f04b]

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

42mm

Case Thickness

10.2mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

30m

Dial Color

Green

Jewels

21j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1982

Related Models

• Seiko 7162-710
• Seiko 6378-108
• Seiko 0741-243
• Seiko 6680-870
• Seiko 4419-744
• Seiko 6254-774
• Seiko 6639-849
• Seiko 6671-841
• Seiko 5698-959
• Seiko 5211-705
• Seiko 5643-627
• Seiko 6322-899