Seiko Cal. 5638 - 267

Released in 1977, the Cal. 5638 with design code 267 was part of Seiko's domestic market collection. It features a Black dial protected by a Acrylic crystal and offers 110m of water resistance. [seikata-wm-95fe90a68919]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

11.0mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Black

Jewels

22j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1977

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