Seiko Cal. 6390 - 188

Seiko 6390-188

This Spring Drive model from 1972 features a 44mm Titanium case. Powered by the 6390 caliber with 32j jewels beating at 28,800 bph, it delivers a 64 hours power reserve. [seikata-wm-ce00b8876a72]

Specifications

Movement
Spring Drive
Case Material
Titanium
Case Width
44mm
Case Thickness
14.0mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
90m
Dial Color
Cream
Jewels
32j
Frequency
28,800 bph
Power Reserve
64 hours
Year
1972

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seikata-wm-ce00b8876a72