Seiko Cal. 5637 - 581

Seiko 5637-581

This Automatic model from 1992 features a 34mm Titanium case. With its 19mm lug width and 13.9mm profile, it sits comfortably on most wrists. [seikata-wm-18afc75c5be1]

Also known as: Sumo, World Timer

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
34mm
Case Thickness
13.9mm
Lug Width
19mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
40m
Dial Color
White
Jewels
18j
Frequency
36,000 bph
Power Reserve
43 hours
Year
1992

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