Seiko Cal. 6639 - 240

Seiko 6639-240

This Automatic model from 1974 features a 34mm PVD Black case. With its 20mm lug width and 14.3mm profile, it sits comfortably on most wrists. [seikata-wm-7f86c4e023d0]

Also known as: Helmet, Navigator

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
34mm
Case Thickness
14.3mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
70m
Dial Color
Black
Jewels
28j
Frequency
36,000 bph
Power Reserve
61 hours
Year
1974

Related Models

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