Seiko Cal. 7028 - 728

The Seiko 7028-728 represents an important milestone in Seiko's 1986 lineup. Powered by the 7028 caliber with 31j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-4e913b654f04]

Also known as: Helmet, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

11.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

30m

Dial Color

Black

Jewels

31j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1986

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