Seiko Cal. 6658 - 661

This Solar model from 1976 features a 37mm PVD Black case. Powered by the 6658 caliber with 19j jewels beating at 28,800 bph, it delivers a 72 hours power reserve. [seikata-wm-51a9b7880e81]

Also known as: Sportsmatic

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

37mm

Case Thickness

12.7mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Navy

Jewels

19j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1976

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