Seiko Cal. 6639 - 437

Seiko 6639-437

This Spring Drive model from 1989 features a 43mm PVD Black case. The Coin-Edge bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-e061741e8ea2]

Also known as: Navigator, Sea Horse

Specifications

Movement
Spring Drive
Case Material
PVD Black
Case Width
43mm
Case Thickness
12.6mm
Lug Width
22mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
160m
Dial Color
White
Jewels
27j
Frequency
21,600 bph
Power Reserve
64 hours
Year
1989

Related Models

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