Seiko Cal. 7160 - 820

This Spring Drive model from 1970 features a 38mm Stainless Steel case. Powered by the 7160 caliber with 17j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-9385eb7e5eda]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

15.7mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

17j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1970

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