Seiko Cal. 5644 - 700

The 5644-700 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5644 caliber with 26j jewels beating at 28,800 bph, it delivers a 39 hours power reserve. [seikata-wm-fa870bd3b59a]

Also known as: Flighty

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

15.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Cream

Jewels

26j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1989

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