Seiko Cal. 6636 - 721

Seiko 6636-721

This Automatic model from 1975 features a 40mm Stainless Steel case. With its 19mm lug width and 12.7mm profile, it sits comfortably on most wrists. [seikata-wm-5487f0c5c18a]

Specifications

Movement
Automatic
Case Material
Stainless Steel
Case Width
40mm
Case Thickness
12.7mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
140m
Dial Color
Green
Jewels
19j
Frequency
36,000 bph
Power Reserve
56 hours
Year
1975

Related Models

seikata-wm-5487f0c5c18a