Seiko Cal. 5640 - 523

The 5640-523 is a sought-after Quartz piece from Seiko's golden era. It features a Champagne dial protected by a Acrylic crystal and offers 70m of water resistance. [seikata-wm-962a71bbab06]

Also known as: Bellmatic, Arnie

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

12.8mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

70m

Dial Color

Champagne

Jewels

26j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1979

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