Seiko Cal. 5623 - 641

The Seiko 5623-641 represents an important milestone in Seiko's 1996 lineup. Powered by the 5623 caliber with 35j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-2ad05db51cce]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

10.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

130m

Dial Color

Navy

Jewels

35j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1996

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