Seiko Cal. 5631 - 883

This Automatic model from 1982 features a 46mm Two-Tone case. It features a Navy dial protected by a Mineral crystal and offers 40m of water resistance. [seikata-wm-16f81f19e870]

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

46mm

Case Thickness

11.6mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

40m

Dial Color

Navy

Jewels

20j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1982

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