Seiko Cal. 5640 - 463

The Seiko 5640-463 represents an important milestone in Seiko's 1999 lineup. With its 19mm lug width and 14.6mm profile, it sits comfortably on most wrists. [seikata-wm-c15e9c8b3f5c]

Also known as: Sumo, Pogue

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

14.6mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Burgundy

Jewels

32j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1999

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