Seiko Cal. 5640 - 908

Seiko 5640-908

This Kinetic model from 1991 features a 44mm Hardlex-Coated Steel case. The Rotating bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-6ce26c1fc3c0]

Also known as: Helmet, World Timer

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
44mm
Case Thickness
11.7mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
120m
Dial Color
Blue Sunburst
Jewels
24j
Frequency
21,600 bph
Power Reserve
48 hours
Year
1991

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