Seiko Cal. 5638 - 972

The 5638-972 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Acrylic crystal and offers 200m of water resistance. [seikata-wm-8ca5cdc80920]

Also known as: Helmet, Navigator

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

44mm

Case Thickness

10.4mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1969

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