Seiko Cal. 7021 - 170

The 7021-170 is a sought-after Spring Drive piece from Seiko's golden era. The Inner Rotating bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-081d55dab0fe]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

12.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Black

Jewels

23j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1989

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