Seiko Cal. 6647 - 998

The Seiko 6647-998 represents an important milestone in Seiko's 1977 lineup. Powered by the 6647 caliber with 35j jewels beating at 21,600 bph, it delivers a 51 hours power reserve. [seikata-wm-3320052c866d]

Also known as: Sportsmatic, Flighty

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

12.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

60m

Dial Color

Black

Jewels

35j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1977

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