Seiko Cal. 3842 - 723

This Spring Drive model from 1971 features a 40mm Gold-Plated case. It features a Navy dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-0c23635e13f8]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

11.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Navy

Jewels

22j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1971

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