Seiko Cal. 6638 - 267

This Spring Drive model from 1984 features a 42mm Stainless Steel case. It features a White dial protected by a Acrylic crystal and offers 80m of water resistance. [seikata-wm-eaf68288ece3]

Also known as: Tuna, Rally

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

8.5mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

White

Jewels

29j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1984

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