Seiko Cal. 5638 - 397

This Spring Drive model from 1980 features a 40mm Gold-Plated case. It features a Navy dial protected by a Mineral crystal and offers 130m of water resistance. [seikata-wm-09720dddfe75]

Also known as: Rally, Crown

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

11.5mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Navy

Jewels

18j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1980

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