Seiko Cal. 5631 - 960

This Quartz model from 1975 features a 40mm Two-Tone case. It features a Cream dial protected by a Acrylic crystal and offers 110m of water resistance. [seikata-wm-7cd286036702]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

40mm

Case Thickness

15.2mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

110m

Dial Color

Cream

Jewels

21j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1975

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