Seiko Cal. 5657 - 312

This Automatic model from 1981 features a 35mm Stainless Steel case. Powered by the 5657 caliber with 34j jewels beating at 36,000 bph, it delivers a 71 hours power reserve. [seikata-wm-89a44fe38676]

Also known as: Sportsmatic

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

9.3mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Burgundy

Jewels

34j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1981

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