Seiko Cal. 5644 - 826

The 5644-826 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5644 caliber with 22j jewels beating at 21,600 bph, it delivers a 51 hours power reserve. [seikata-wm-9a210460b108]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

12.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

60m

Dial Color

Silver

Jewels

22j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1990

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