Seiko Cal. 5640 - 623

The Seiko 5640-623 represents an important milestone in Seiko's 1997 lineup. Powered by the 5640 caliber with 21j jewels beating at 28,800 bph, it delivers a 44 hours power reserve. [seikata-wm-072c674d437a]

Also known as: Silverwave, World Timer

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

14.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Burgundy

Jewels

21j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1997

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