Seiko Cal. 6388 - 639

Seiko 6388-639

This Quartz model from 1976 features a 36mm Two-Tone case. With its 18mm lug width and 10.0mm profile, it sits comfortably on most wrists. [seikata-wm-a8812671bc71]

Also known as: Sumo

Specifications

Movement
Quartz
Case Material
Two-Tone
Case Width
36mm
Case Thickness
10.0mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
130m
Dial Color
Green
Jewels
30j
Frequency
21,600 bph
Power Reserve
70 hours
Year
1976

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seikata-wm-a8812671bc71