Seiko Cal. 5640 - 685

Seiko 5640-685

This Automatic model from 1974 features a 34mm Hardlex-Coated Steel case. With its 19mm lug width and 12.2mm profile, it sits comfortably on most wrists. [seikata-wm-a7d5eec316b3]

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
34mm
Case Thickness
12.2mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
60m
Dial Color
Burgundy
Jewels
22j
Frequency
28,800 bph
Power Reserve
40 hours
Year
1974

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