Seiko Cal. 0731 - 616

This Spring Drive model from 1990 features a 38mm Stainless Steel case. Powered by the 0731 caliber with 28j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-e07cdb212400]

Also known as: Sea Horse, Emperor

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

14.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

28j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1990

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