Seiko Cal. 6648 - 998

The Seiko 6648-998 represents an important milestone in Seiko's 1985 lineup. Powered by the 6648 caliber with 34j jewels beating at 36,000 bph, it delivers a 43 hours power reserve. [seikata-wm-4260d768e7e9]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

13.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

110m

Dial Color

Black

Jewels

34j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1985

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