Seiko Cal. 6636 - 907

Seiko 6636-907

This Spring Drive model from 1974 features a 40mm Titanium case. The Fixed bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-15e01c63ab62]

Also known as: Turtle, Shogun

Specifications

Movement
Spring Drive
Case Material
Titanium
Case Width
40mm
Case Thickness
12.9mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
150m
Dial Color
Cream
Jewels
18j
Frequency
28,800 bph
Power Reserve
71 hours
Year
1974

Related Models

seikata-wm-15e01c63ab62