Seiko Cal. 5646 - 998

The Seiko 5646-998 represents an important milestone in Seiko's 1986 lineup. Powered by the 5646 caliber with 30j jewels beating at 21,600 bph, it delivers a 44 hours power reserve. [seikata-wm-b2747b7beed7]

Also known as: Sportsmatic

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

35mm

Case Thickness

14.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

60m

Dial Color

Cream

Jewels

30j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1986

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