Seiko Cal. 6613 - 157

This Quartz model from 1979 features a 38mm PVD Black case. Powered by the 6613 caliber with 20j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-8288391010fe]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

38mm

Case Thickness

8.5mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1979

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