Seiko Cal. 4447 - 978

This Hand-Winding model from 1972 features a 46mm PVD Black case. It features a White dial protected by a Hardlex crystal and offers 190m of water resistance. [seikata-wm-1aeaba53f040]

Also known as: Sportsmatic, World Timer

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

46mm

Case Thickness

12.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

White

Jewels

36j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1972

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