Seiko Cal. 6637 - 121

Seiko 6637-121

This Quartz model from 1974 features a 43mm Hardlex-Coated Steel case. With its 18mm lug width and 11.8mm profile, it sits comfortably on most wrists. [seikata-wm-484d9c6c6d5e]

Also known as: Bellmatic

Specifications

Movement
Quartz
Case Material
Hardlex-Coated Steel
Case Width
43mm
Case Thickness
11.8mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
200m
Dial Color
Champagne
Jewels
27j
Frequency
36,000 bph
Power Reserve
51 hours
Year
1974

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