Seiko Cal. 4447 - 537

This Spring Drive model from 1987 features a 43mm Hardlex-Coated Steel case. Powered by the 4447 caliber with 26j jewels beating at 21,600 bph, it delivers a 72 hours power reserve. [seikata-wm-a87e3e404264]

Also known as: Turtle

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

11.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

190m

Dial Color

Green

Jewels

26j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1987

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