Seiko Cal. 6640 - 527

Seiko 6640-527

This Automatic model from 1973 features a 41mm Hardlex-Coated Steel case. The Inner Rotating bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-60268ab2f0e4]

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
41mm
Case Thickness
8.1mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
120m
Dial Color
White
Jewels
28j
Frequency
36,000 bph
Power Reserve
47 hours
Year
1973

Related Models

seikata-wm-60268ab2f0e4