Seiko Cal. 3891 - 920

Seiko 3891-920

This Automatic model from 1970 features a 44mm Gold-Plated case. Powered by the 3891 caliber with 26j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-9004a2c8244f]

Specifications

Movement
Automatic
Case Material
Gold-Plated
Case Width
44mm
Case Thickness
12.4mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
130m
Dial Color
White
Jewels
26j
Frequency
36,000 bph
Power Reserve
69 hours
Year
1970

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seikata-wm-9004a2c8244f