Seiko Cal. 4536 - 641

The Seiko 4536-641 represents an important milestone in Seiko's 1999 lineup. With its 19mm lug width and 10.3mm profile, it sits comfortably on most wrists. [seikata-wm-b553899fcd4a]

Also known as: Helmet, Sportsmatic

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

43mm

Case Thickness

10.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

70m

Dial Color

Navy

Jewels

31j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1999

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