Seiko Cal. 0728 - 785

This Spring Drive model from 1977 features a 35mm Stainless Steel case. Powered by the 0728 caliber with 19j jewels beating at 21,600 bph, it delivers a 52 hours power reserve. [seikata-wm-c73e471caaa0]

Also known as: Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

12.2mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

90m

Dial Color

Burgundy

Jewels

19j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1977

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