Seiko Cal. 6617 - 630

The 6617-630 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6617 caliber with 18j jewels beating at 36,000 bph, it delivers a 63 hours power reserve. [seikata-wm-808385fe2e93]

Also known as: Sportsmatic, Crown

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

15.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Green

Jewels

18j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1983

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