Seiko Cal. 6670 - 636

Seiko 6670-636

This Automatic model from 1971 features a 36mm Hardlex-Coated Steel case. With its 21mm lug width and 13.5mm profile, it sits comfortably on most wrists. [seikata-wm-9858b148eca1]

Also known as: Helmet, Goldfeather

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
36mm
Case Thickness
13.5mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
170m
Dial Color
Champagne
Jewels
21j
Frequency
36,000 bph
Power Reserve
37 hours
Year
1971

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