Seiko Cal. 7028 - 531

The 7028-531 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7028 caliber with 24j jewels beating at 21,600 bph, it delivers a 66 hours power reserve. [seikata-wm-7a4badc702ee]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

42mm

Case Thickness

14.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Cream

Jewels

24j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1977

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