Seiko Cal. 3831 - 835

This Hand-Winding model from 1969 features a 41mm Hardlex-Coated Steel case. It features a Black dial protected by a Hardlex crystal and offers 70m of water resistance. [seikata-wm-2cbc0e5f6221]

Also known as: Monster

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

13.4mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Black

Jewels

22j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1969

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