Seiko Cal. 4439 - 128

The Seiko 4439-128 represents an important milestone in Seiko's 1966 lineup. With its 22mm lug width and 9.2mm profile, it sits comfortably on most wrists. [seikata-wm-bcc6914c23b8]

Also known as: Sumo, World Timer

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

42mm

Case Thickness

9.2mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Burgundy

Jewels

20j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1966

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