Seiko Cal. 5666 - 297

This Automatic model from 1975 features a 43mm Hardlex-Coated Steel case. Powered by the 5666 caliber with 23j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-2798c605e375]

Also known as: Baby Tuna, Emperor

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

12.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

140m

Dial Color

White

Jewels

23j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1975

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