Seiko Cal. 4439 - 271

The Seiko 4439-271 represents an important milestone in Seiko's 1975 lineup. Powered by the 4439 caliber with 21j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-1dba297b50a3]

Also known as: World Timer, Flighty

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

38mm

Case Thickness

14.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

110m

Dial Color

Navy

Jewels

21j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1975

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