Seiko Cal. 5639 - 237

Seiko 5639-237

This Quartz model from 1979 features a 35mm Two-Tone case. The Inner Rotating bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-f9e9579ce4e0]

Also known as: Bullhead, Golden Tuna

Specifications

Movement
Quartz
Case Material
Two-Tone
Case Width
35mm
Case Thickness
13.7mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
180m
Dial Color
Silver
Jewels
18j
Frequency
28,800 bph
Power Reserve
57 hours
Year
1979

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