Seiko Cal. 3823 - 640

The Seiko 3823-640 represents an important milestone in Seiko's 1992 lineup. With its 20mm lug width and 15.8mm profile, it sits comfortably on most wrists. [seikata-wm-41485aef12f5]

Also known as: Monster, Sumo

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

15.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

White

Jewels

21j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1992

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