Seiko Cal. 3889 - 391

Seiko 3889-391

This Spring Drive model from 1967 features a 40mm Titanium case. Powered by the 3889 caliber with 24j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-c7844567abaf]

Also known as: Bullhead

Specifications

Movement
Spring Drive
Case Material
Titanium
Case Width
40mm
Case Thickness
8.3mm
Lug Width
20mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
160m
Dial Color
Black
Jewels
24j
Frequency
28,800 bph
Power Reserve
41 hours
Year
1967

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