Seiko Cal. 5631 - 179

Seiko 5631-179

The 5631-179 is a sought-after Automatic piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-ac0c0c6165f4]

Also known as: Sumo, Baby Tuna

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
46mm
Case Thickness
11.2mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
50m
Dial Color
Blue Sunburst
Jewels
33j
Frequency
21,600 bph
Power Reserve
41 hours
Year
1982

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