Seiko Cal. 3836 - 644

This Spring Drive model from 1972 features a 44mm Hardlex-Coated Steel case. It features a Green dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-e58722319506]

Also known as: World Timer, Flighty

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

12.4mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Green

Jewels

35j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1972

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