Seiko Cal. 5644 - 743

Released in 1999, the Cal. 5644 with design code 743 was part of Seiko's domestic market collection. With its 19mm lug width and 10.1mm profile, it sits comfortably on most wrists. [seikata-wm-517edd3be2b0]

Also known as: Helmet

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

10.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Navy

Jewels

35j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1999

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