Seiko Cal. 5640 - 824

Released in 1990, the Cal. 5640 with design code 824 was part of Seiko's domestic market collection. With its 18mm lug width and 8.3mm profile, it sits comfortably on most wrists. [seikata-wm-06caebd20df9]

Also known as: Silverwave, Bellmatic

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

8.3mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

140m

Dial Color

White

Jewels

26j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1990

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