Seiko Cal. 7170 - 581

The 7170-581 is a sought-after Spring Drive piece from Seiko's golden era. With its 21mm lug width and 8.9mm profile, it sits comfortably on most wrists. [seikata-wm-68707632ed61]

Also known as: Sumo, Crown

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

36mm

Case Thickness

8.9mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Navy

Jewels

30j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1968

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