Seiko Cal. 7181 - 770

This Hand-Winding model from 1983 features a 39mm Stainless Steel case. Powered by the 7181 caliber with 31j jewels beating at 21,600 bph, it delivers a 61 hours power reserve. [seikata-wm-340ab5bb52ee]

Also known as: Crown

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

12.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

200m

Dial Color

Cream

Jewels

31j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1983

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