Seiko Cal. 5643 - 988

The Seiko 5643-988 represents an important milestone in Seiko's 1987 lineup. The Fixed bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-4adab207e384]

Also known as: Bellmatic, Arnie

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

40mm

Case Thickness

9.0mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

60m

Dial Color

Navy

Jewels

31j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1987

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