Seiko Cal. 7028 - 520

The Seiko 7028-520 represents an important milestone in Seiko's 1975 lineup. Powered by the 7028 caliber with 27j jewels beating at 21,600 bph, it delivers a 48 hours power reserve. [seikata-wm-f2a38402703b]

Also known as: Bullhead, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

8.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Navy

Jewels

27j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1975

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