Seiko Cal. 5666 - 721

This Quartz model from 1978 features a 43mm PVD Black case. Powered by the 5666 caliber with 35j jewels beating at 21,600 bph, it delivers a 49 hours power reserve. [seikata-wm-149b82a9b086]

Also known as: Tuna, Goldfeather

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

43mm

Case Thickness

15.0mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Champagne

Jewels

35j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1978

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