Seiko Cal. 5644 - 817

This Spring Drive model from 1976 features a 42mm Stainless Steel case. Powered by the 5644 caliber with 26j jewels beating at 36,000 bph, it delivers a 47 hours power reserve. [seikata-wm-04ce8a875df8]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

13.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

50m

Dial Color

Silver

Jewels

26j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1976

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