Seiko Cal. 6640 - 202

Seiko 6640-202

This Quartz model from 1978 features a 44mm PVD Black case. The Inner Rotating bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-4ad29883d187]

Specifications

Movement
Quartz
Case Material
PVD Black
Case Width
44mm
Case Thickness
8.7mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
120m
Dial Color
Blue Sunburst
Jewels
31j
Frequency
28,800 bph
Power Reserve
39 hours
Year
1978

Related Models

seikata-wm-4ad29883d187