Seiko Cal. 4427 - 386

This Quartz model from 1978 features a 36mm PVD Black case. Powered by the 4427 caliber with 18j jewels beating at 28,800 bph, it delivers a 43 hours power reserve. [seikata-wm-590d107425ff]

Also known as: World Timer, Arnie

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

36mm

Case Thickness

8.6mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Green

Jewels

18j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1978

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