Seiko Cal. 6663 - 930

The 6663-930 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6663 caliber with 31j jewels beating at 36,000 bph, it delivers a 71 hours power reserve. [seikata-wm-a4e39d9b5416]

Also known as: Arnie

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

44mm

Case Thickness

10.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Silver

Jewels

31j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1971

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