Seiko Cal. 6664 - 931

This Hand-Winding model from 1975 features a 44mm Two-Tone case. It features a Cream dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-948e10fcd3fa]

Also known as: Sumo, Silverwave

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

44mm

Case Thickness

13.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Cream

Jewels

22j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1975

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