Seiko Cal. 4439 - 920

The 4439-920 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4439 caliber with 36j jewels beating at 21,600 bph, it delivers a 64 hours power reserve. [seikata-wm-d94923f0cfdc]

Also known as: Navigator, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

15.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

White

Jewels

36j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1998

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