Seiko Cal. 6657 - 579

This Kinetic model from 1991 features a 39mm Gold-Plated case. Powered by the 6657 caliber with 30j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-60bef986fef4]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

9.8mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Burgundy

Jewels

30j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1991

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