Seiko Cal. 5640 - 723

This Quartz model from 1982 features a 37mm Two-Tone case. With its 20mm lug width and 12.3mm profile, it sits comfortably on most wrists. [seikata-wm-d88f052c631c]

Also known as: Arnie

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

37mm

Case Thickness

12.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

White

Jewels

23j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1982

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