Seiko Cal. 6637 - 634

Seiko 6637-634

This Spring Drive model from 1973 features a 43mm Gold-Plated case. With its 19mm lug width and 10.5mm profile, it sits comfortably on most wrists. [seikata-wm-be5c1c0099a9]

Also known as: Navigator

Specifications

Movement
Spring Drive
Case Material
Gold-Plated
Case Width
43mm
Case Thickness
10.5mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
60m
Dial Color
White
Jewels
27j
Frequency
36,000 bph
Power Reserve
63 hours
Year
1973

Related Models

seikata-wm-be5c1c0099a9