Seiko Cal. 6639 - 817

Seiko 6639-817

This Quartz model from 1977 features a 34mm Titanium case. The Fixed bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-86a2da287b0e]

Also known as: Monster, Bullhead

Specifications

Movement
Quartz
Case Material
Titanium
Case Width
34mm
Case Thickness
8.8mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
30m
Dial Color
Blue Sunburst
Jewels
24j
Frequency
21,600 bph
Power Reserve
51 hours
Year
1977

Related Models

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