Seiko Cal. 7011 - 528

The Seiko 7011-528 represents an important milestone in Seiko's 1978 lineup. Powered by the 7011 caliber with 22j jewels beating at 36,000 bph, it delivers a 55 hours power reserve. [seikata-wm-862fafc9a1ce]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

36mm

Case Thickness

12.4mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Cream

Jewels

22j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1978

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