Seiko Cal. 5657 - 674

This Automatic model from 1965 features a 37mm Two-Tone case. Powered by the 5657 caliber with 18j jewels beating at 21,600 bph, it delivers a 39 hours power reserve. [seikata-wm-b49fd336c830]

Also known as: Baby Tuna, Flighty

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

37mm

Case Thickness

13.3mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Green

Jewels

18j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1965

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