Seiko Cal. 0742 - 987

This Spring Drive model from 1987 features a 40mm Hardlex-Coated Steel case. Powered by the 0742 caliber with 30j jewels beating at 36,000 bph, it delivers a 58 hours power reserve. [seikata-wm-023638e3c839]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

12.0mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Green

Jewels

30j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1987

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