Seiko Cal. 5640 - 631

Seiko 5640-631

This Solar model from 1983 features a 41mm PVD Black case. With its 21mm lug width and 13.4mm profile, it sits comfortably on most wrists. [seikata-wm-087605eba7f4]

Also known as: World Timer

Specifications

Movement
Solar
Case Material
PVD Black
Case Width
41mm
Case Thickness
13.4mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
150m
Dial Color
Cream
Jewels
30j
Frequency
36,000 bph
Power Reserve
49 hours
Year
1983

Related Models

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