Seiko Cal. 5644 - 273

Seiko 5644-273

Released in 1979, the Cal. 5644 with design code 273 was part of Seiko's domestic market collection. Powered by the 5644 caliber with 25j jewels beating at 36,000 bph, it delivers a 50 hours power reserve. [seikata-wm-40e95a6abad3]

Also known as: Sumo, Sea Horse

Specifications

Movement
Hand-Winding
Case Material
Stainless Steel
Case Width
37mm
Case Thickness
10.8mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
90m
Dial Color
Green
Jewels
25j
Frequency
36,000 bph
Power Reserve
50 hours
Year
1979

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seikata-wm-40e95a6abad3