Seiko Cal. 6639 - 637

Seiko 6639-637

This Solar model from 1983 features a 37mm Titanium case. The Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-3ef209626626]

Also known as: Bullhead, Crown

Specifications

Movement
Solar
Case Material
Titanium
Case Width
37mm
Case Thickness
10.9mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
110m
Dial Color
Burgundy
Jewels
20j
Frequency
36,000 bph
Power Reserve
46 hours
Year
1983

Related Models

seikata-wm-3ef209626626