Seiko Cal. 4439 - 726

The 4439-726 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4439 caliber with 35j jewels beating at 21,600 bph, it delivers a 51 hours power reserve. [seikata-wm-c71f15cc12eb]

Also known as: UFO, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

12.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1990

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