Seiko Cal. 3873 - 781

This Quartz model from 1976 features a 45mm Hardlex-Coated Steel case. Powered by the 3873 caliber with 24j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-315bc01cdf0a]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

11.0mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Burgundy

Jewels

24j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1976

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