Seiko Cal. 6638 - 964

Seiko 6638-964

This Automatic model from 1981 features a 46mm Hardlex-Coated Steel case. The Bidirectional bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-8cddbf614f34]

Also known as: Crown

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
46mm
Case Thickness
12.2mm
Lug Width
20mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
190m
Dial Color
Silver
Jewels
32j
Frequency
21,600 bph
Power Reserve
65 hours
Year
1981

Related Models

seikata-wm-8cddbf614f34