Seiko Cal. 4439 - 388

Seiko 4439-388

This Automatic model from 1967 features a 35mm Hardlex-Coated Steel case. Powered by the 4439 caliber with 31j jewels beating at 36,000 bph, it delivers a 56 hours power reserve. [seikata-wm-aa0d02e3af9c]

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
35mm
Case Thickness
15.7mm
Lug Width
20mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
80m
Dial Color
White
Jewels
31j
Frequency
36,000 bph
Power Reserve
56 hours
Year
1967

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