Seiko Cal. 6658 - 930

The 6658-930 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6658 caliber with 36j jewels beating at 21,600 bph, it delivers a 61 hours power reserve. [seikata-wm-bc8fb28f1c2e]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

13.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

140m

Dial Color

Cream

Jewels

36j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1983

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