Seiko Cal. 5644 - 747

The 5644-747 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5644 caliber with 35j jewels beating at 36,000 bph, it delivers a 58 hours power reserve. [seikata-wm-538ba3db26b1]

Also known as: Sumo, Flighty

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

14.0mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Black

Jewels

35j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1996

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