Seiko Cal. 6638 - 607

Seiko 6638-607

This Spring Drive model from 1982 features a 39mm Titanium case. The Inner Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-64b54a115c79]

Also known as: World Timer, Crown

Specifications

Movement
Spring Drive
Case Material
Titanium
Case Width
39mm
Case Thickness
11.8mm
Lug Width
18mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
120m
Dial Color
Cream
Jewels
23j
Frequency
28,800 bph
Power Reserve
65 hours
Year
1982

Related Models

seikata-wm-64b54a115c79