Seiko Cal. 6637 - 586

This Hand-Winding model from 1965 features a 40mm Gold-Plated case. The Bidirectional bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-296bc65e6300]

Also known as: Navigator

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

11.6mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Burgundy

Jewels

21j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1965

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