Seiko Cal. 5664 - 100

This Quartz model from 1991 features a 44mm PVD Black case. Powered by the 5664 caliber with 30j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-6dddf2122806]

Also known as: Helmet, UFO

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

44mm

Case Thickness

10.6mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

50m

Dial Color

Green

Jewels

30j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1991

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