Seiko Cal. 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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