Seiko Cal. 4428 - 326

Released in 1986, the Cal. 4428 with design code 326 was part of Seiko's domestic market collection. Powered by the 4428 caliber with 31j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-fea50afed022]

Also known as: UFO

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

42mm

Case Thickness

10.1mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

180m

Dial Color

Green

Jewels

31j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1986

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