Seiko Cal. 5644 - 554

The Seiko 5644-554 represents an important milestone in Seiko's 1993 lineup. Powered by the 5644 caliber with 31j jewels beating at 28,800 bph, it delivers a 54 hours power reserve. [seikata-wm-b98932e8b880]

Also known as: Sportsmatic

Specifications

Movement

Solar

Case Material

Titanium

Case Width

44mm

Case Thickness

11.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

170m

Dial Color

Silver

Jewels

31j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1993

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