Seiko Cal. 4436 - 720

Seiko 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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