Seiko Cal. 4427 - 235

This Spring Drive model from 1980 features a 43mm PVD Black case. Powered by the 4427 caliber with 21j jewels beating at 36,000 bph, it delivers a 56 hours power reserve. [seikata-wm-0f4036eb0a32]

Also known as: Flighty

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

43mm

Case Thickness

9.6mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Silver

Jewels

21j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1980

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