Seiko Cal. 6638 - 721

Seiko 6638-721

This Kinetic model from 1988 features a 39mm Titanium case. It features a Silver dial protected by a Hardlex crystal and offers 130m of water resistance. [seikata-wm-1ffbaa8498a4]

Specifications

Movement
Kinetic
Case Material
Titanium
Case Width
39mm
Case Thickness
10.1mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
130m
Dial Color
Silver
Jewels
24j
Frequency
21,600 bph
Power Reserve
57 hours
Year
1988

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