Seiko Cal. 5643 - 822

The Seiko 5643-822 represents an important milestone in Seiko's 1978 lineup. The Bidirectional bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-91a44e75c9ca]

Also known as: Silverwave

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

9.3mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Champagne

Jewels

34j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1978

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