Seiko Cal. 4439 - 855

The 4439-855 is a sought-after Kinetic piece from Seiko's golden era. The Inner Rotating bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-9ea3173ebbc0]

Also known as: UFO

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

9.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Navy

Jewels

26j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1968

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