Seiko Cal. 4449 - 646

This Spring Drive model from 1975 features a 40mm Hardlex-Coated Steel case. It features a White dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-e4a6f5f52d69]

Also known as: World Timer, Crown

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

15.2mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

40m

Dial Color

White

Jewels

30j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1975

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