Seiko Cal. 7166 - 357

Seiko 7166-357

This Spring Drive model from 1977 features a 37mm Gold-Plated case. Powered by the 7166 caliber with 20j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-1558528d941f]

Also known as: Baby Tuna

Specifications

Movement
Spring Drive
Case Material
Gold-Plated
Case Width
37mm
Case Thickness
12.2mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
90m
Dial Color
Silver
Jewels
20j
Frequency
28,800 bph
Power Reserve
50 hours
Year
1977

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