Seiko Cal. 6639 - 131

Seiko 6639-131

This Quartz model from 1967 features a 38mm Two-Tone case. Powered by the 6639 caliber with 24j jewels beating at 21,600 bph, it delivers a 61 hours power reserve. [seikata-wm-3c85260353cb]

Specifications

Movement
Quartz
Case Material
Two-Tone
Case Width
38mm
Case Thickness
10.9mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
70m
Dial Color
Green
Jewels
24j
Frequency
21,600 bph
Power Reserve
61 hours
Year
1967

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