Seiko Cal. 4420 - 612

This Spring Drive model from 1969 features a 39mm Stainless Steel case. It features a Black dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-9794d3931169]

Also known as: Monster, Arnie

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

9.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Black

Jewels

27j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1969

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