Seiko Cal. 5640 - 179

The 5640-179 is a sought-after Hand-Winding piece from Seiko's golden era. The Fixed bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-17ba89e8043e]

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

38mm

Case Thickness

15.4mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

80m

Dial Color

Burgundy

Jewels

34j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1977

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