Seiko Cal. 4555 - 640

The Seiko 4555-640 represents an important milestone in Seiko's 1986 lineup. The Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-fcc5be9d2b49]

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

36mm

Case Thickness

15.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

100m

Dial Color

Green

Jewels

34j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1986

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