Seiko Cal. 6639 - 510

Seiko 6639-510

This Solar model from 1977 features a 44mm Titanium case. With its 20mm lug width and 12.0mm profile, it sits comfortably on most wrists. [seikata-wm-630502b1a05d]

Specifications

Movement
Solar
Case Material
Titanium
Case Width
44mm
Case Thickness
12.0mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
150m
Dial Color
Green
Jewels
30j
Frequency
36,000 bph
Power Reserve
55 hours
Year
1977

Related Models

seikata-wm-630502b1a05d