Seiko Cal. 4440 - 431

The 4440-431 is a sought-after Spring Drive piece from Seiko's golden era. With its 19mm lug width and 15.5mm profile, it sits comfortably on most wrists. [seikata-wm-3d65bd4afc77]

Also known as: World Timer, Navigator

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

46mm

Case Thickness

15.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

80m

Dial Color

Champagne

Jewels

34j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1965

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