Seiko Cal. 6637 - 580

Seiko 6637-580

This Hand-Winding model from 1975 features a 42mm Titanium case. With its 20mm lug width and 8.2mm profile, it sits comfortably on most wrists. [seikata-wm-7970f6b5bc81]

Specifications

Movement
Hand-Winding
Case Material
Titanium
Case Width
42mm
Case Thickness
8.2mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
200m
Dial Color
Silver
Jewels
33j
Frequency
28,800 bph
Power Reserve
38 hours
Year
1975

Related Models

seikata-wm-7970f6b5bc81