Seiko Cal. 4439 - 618

The Seiko 4439-618 represents an important milestone in Seiko's 1998 lineup. Powered by the 4439 caliber with 18j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-6151ccdaf9ff]

Also known as: Tuna, Rally

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

9.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

110m

Dial Color

Burgundy

Jewels

18j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1998

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