Seiko Cal. 3864 - 706

This Quartz model from 1970 features a 43mm Two-Tone case. It features a Burgundy dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-997570075909]

Also known as: Sumo, Helmet

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

43mm

Case Thickness

12.0mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Burgundy

Jewels

33j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1970

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