Seiko Cal. 5631 - 934

The 5631-934 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Burgundy dial protected by a Hardlex crystal and offers 180m of water resistance. [seikata-wm-7ad96878e392]

Also known as: Samurai, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

12.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Burgundy

Jewels

22j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1998

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