Seiko Cal. 5631 - 357

Seiko 5631-357

The Seiko 5631-357 represents an important milestone in Seiko's 1991 lineup. The Fixed bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-bcdca66f50f8]

Also known as: Rally, Baby Tuna

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
39mm
Case Thickness
9.7mm
Lug Width
18mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
170m
Dial Color
Silver
Jewels
20j
Frequency
28,800 bph
Power Reserve
42 hours
Year
1991

Related Models

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