Seiko Cal. 6639 - 375

Seiko 6639-375

This Automatic model from 1972 features a 46mm Two-Tone case. Powered by the 6639 caliber with 17j jewels beating at 21,600 bph, it delivers a 62 hours power reserve. [seikata-wm-1bc18416c645]

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
46mm
Case Thickness
12.4mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
170m
Dial Color
White
Jewels
17j
Frequency
21,600 bph
Power Reserve
62 hours
Year
1972

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