Seiko Cal. 5638 - 213

This Spring Drive model from 1983 features a 45mm Hardlex-Coated Steel case. The Coin-Edge bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-7c73dcd3ce19]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

13.7mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Green

Jewels

19j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1983

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