Seiko Cal. 0742 - 639

Seiko 0742-639

This Spring Drive model from 1970 features a 39mm Hardlex-Coated Steel case. The Coin-Edge bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-45afb33f4045]

Also known as: Navigator

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
39mm
Case Thickness
13.0mm
Lug Width
19mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
200m
Dial Color
Blue Sunburst
Jewels
27j
Frequency
21,600 bph
Power Reserve
61 hours
Year
1970

Related Models

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