Seiko Cal. 4436 - 720

This Spring Drive model from 1970 features a 44mm PVD Black case. It features a Green dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-1ad69a39352a]

Also known as: Baby Tuna, Arnie

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

44mm

Case Thickness

14.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Green

Jewels

36j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1970

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