Seiko Cal. 6638 - 944

Seiko 6638-944

This Spring Drive model from 1968 features a 36mm Titanium case. With its 22mm lug width and 9.5mm profile, it sits comfortably on most wrists. [seikata-wm-7a1d886ffc56]

Specifications

Movement
Spring Drive
Case Material
Titanium
Case Width
36mm
Case Thickness
9.5mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
150m
Dial Color
Navy
Jewels
21j
Frequency
21,600 bph
Power Reserve
56 hours
Year
1968

Related Models

seikata-wm-7a1d886ffc56