Seiko Cal. 5644 - 443

The 5644-443 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5644 caliber with 21j jewels beating at 21,600 bph, it delivers a 42 hours power reserve. [seikata-wm-b5bd6431485f]

Also known as: Panda, Flighty

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

46mm

Case Thickness

11.2mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Black

Jewels

21j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1981

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