Seiko Cal. 3820 - 837

This Spring Drive model from 1975 features a 42mm Hardlex-Coated Steel case. It features a Green dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-4a47ca1db068]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

13.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Green

Jewels

23j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1975

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