Seiko Cal. 4447 - 712

This Automatic model from 1966 features a 42mm Hardlex-Coated Steel case. Powered by the 4447 caliber with 28j jewels beating at 28,800 bph, it delivers a 43 hours power reserve. [seikata-wm-a2dd2c8e0550]

Also known as: Monster, Bellmatic

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

8.5mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

140m

Dial Color

Green

Jewels

28j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1966

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