Seiko Cal. 5644 - 826

Seiko 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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seikata-wm-9a210460b108