Seiko Cal. 6631 - 593

The 6631-593 is a sought-after Automatic piece from Seiko's golden era. It features a Burgundy dial protected by a Hardlex crystal and offers 60m of water resistance. [seikata-wm-0ee7a29fd44c]

Also known as: Samurai, Helmet

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

15.0mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

60m

Dial Color

Burgundy

Jewels

22j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1997

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