Seiko Cal. 7139 - 831

This Quartz model from 1981 features a 35mm Gold-Plated case. Powered by the 7139 caliber with 18j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-1b3866dc66a6]

Also known as: Monster

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

14.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

White

Jewels

18j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1981

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