Seiko Cal. 6657 - 523

This Kinetic model from 1993 features a 37mm PVD Black case. Powered by the 6657 caliber with 17j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-7f8d7e3bffb8]

Also known as: Sumo

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

37mm

Case Thickness

10.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

140m

Dial Color

White

Jewels

17j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1993

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