Seiko Cal. 4446 - 520

This Hand-Winding model from 1967 features a 38mm Titanium case. Powered by the 4446 caliber with 20j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-86cf76c70767]

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

38mm

Case Thickness

11.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

50m

Dial Color

Green

Jewels

20j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1967

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