Seiko Cal. 3890 - 321

Seiko 3890-321

This Automatic model from 1981 features a 37mm Hardlex-Coated Steel case. Powered by the 3890 caliber with 35j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-c2791cb13f16]

Also known as: Baby Tuna

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
37mm
Case Thickness
11.8mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
120m
Dial Color
Navy
Jewels
35j
Frequency
36,000 bph
Power Reserve
44 hours
Year
1981

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