Seiko Cal. 4441 - 727

The Seiko 4441-727 represents an important milestone in Seiko's 1979 lineup. Powered by the 4441 caliber with 21j jewels beating at 21,600 bph, it delivers a 49 hours power reserve. [seikata-wm-113243539f3c]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

11.1mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Silver

Jewels

21j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1979

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