Seiko Cal. 5644 - 393

The 5644-393 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5644 caliber with 23j jewels beating at 28,800 bph, it delivers a 46 hours power reserve. [seikata-wm-a21adcc79ff7]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

15.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

200m

Dial Color

Burgundy

Jewels

23j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1973

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