Seiko Cal. 5638 - 380

The 5638-380 is a sought-after Solar piece from Seiko's golden era. The Fixed bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-e94bfc196ff2]

Also known as: Tuna, Bullhead

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

45mm

Case Thickness

10.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

100m

Dial Color

Black

Jewels

17j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1969

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