Seiko Cal. 4437 - 819

Seiko 4437-819

This Spring Drive model from 1974 features a 43mm PVD Black case. Powered by the 4437 caliber with 20j jewels beating at 21,600 bph, it delivers a 72 hours power reserve. [seikata-wm-c3c717703233]

Also known as: Sumo, Arnie

Specifications

Movement
Spring Drive
Case Material
PVD Black
Case Width
43mm
Case Thickness
10.7mm
Lug Width
21mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
140m
Dial Color
Navy
Jewels
20j
Frequency
21,600 bph
Power Reserve
72 hours
Year
1974

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seikata-wm-c3c717703233