Seiko Cal. 5640 - 272

Seiko 5640-272

This Quartz model from 1977 features a 35mm Titanium case. The Inner Rotating bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-9a2642421bfb]

Also known as: Sea Horse, Crown

Specifications

Movement
Quartz
Case Material
Titanium
Case Width
35mm
Case Thickness
9.1mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
100m
Dial Color
Navy
Jewels
30j
Frequency
28,800 bph
Power Reserve
64 hours
Year
1977

Related Models

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