Seiko Cal. 4439 - 726

Seiko 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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