Seiko Cal. 3891 - 106

Seiko 3891-106

This Spring Drive model from 1981 features a 37mm Titanium case. Powered by the 3891 caliber with 27j jewels beating at 28,800 bph, it delivers a 44 hours power reserve. [seikata-wm-3a56ee875030]

Also known as: Baby Tuna

Specifications

Movement
Spring Drive
Case Material
Titanium
Case Width
37mm
Case Thickness
14.5mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
60m
Dial Color
Cream
Jewels
27j
Frequency
28,800 bph
Power Reserve
44 hours
Year
1981

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seikata-wm-3a56ee875030