Seiko Cal. 6391 - 957

Seiko 6391-957

This Hand-Winding model from 1980 features a 45mm Two-Tone case. Powered by the 6391 caliber with 29j jewels beating at 36,000 bph, it delivers a 61 hours power reserve. [seikata-wm-31c47111072e]

Specifications

Movement
Hand-Winding
Case Material
Two-Tone
Case Width
45mm
Case Thickness
8.1mm
Lug Width
18mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
120m
Dial Color
Navy
Jewels
29j
Frequency
36,000 bph
Power Reserve
61 hours
Year
1980

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seikata-wm-31c47111072e