Seiko Cal. 4439 - 456

The 4439-456 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 4439 caliber with 36j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-6337df7ea9c0]

Also known as: Sumo, Flighty

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

35mm

Case Thickness

10.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Cream

Jewels

36j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1981

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