Seiko Cal. 7028 - 442

This Spring Drive model from 1991 features a 37mm Stainless Steel case. Powered by the 7028 caliber with 28j jewels beating at 21,600 bph, it delivers a 66 hours power reserve. [seikata-wm-273d8714036e]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

15.1mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Cream

Jewels

28j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1991

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