Seiko Cal. 5640 - 825

Seiko 5640-825

This Hand-Winding model from 1972 features a 37mm Titanium case. With its 18mm lug width and 11.8mm profile, it sits comfortably on most wrists. [seikata-wm-e1242a91bd36]

Also known as: Monster, Sea Horse

Specifications

Movement
Hand-Winding
Case Material
Titanium
Case Width
37mm
Case Thickness
11.8mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
130m
Dial Color
Cream
Jewels
35j
Frequency
21,600 bph
Power Reserve
66 hours
Year
1972

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seikata-wm-e1242a91bd36