Seiko Cal. 7028 - 421

The Seiko 7028-421 represents an important milestone in Seiko's 1987 lineup. Powered by the 7028 caliber with 32j jewels beating at 28,800 bph, it delivers a 38 hours power reserve. [seikata-wm-13a8399b383b]

Also known as: Sumo

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

12.3mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

140m

Dial Color

Champagne

Jewels

32j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1987

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