Seiko Cal. 4428 - 950

Released in 1984, the Cal. 4428 with design code 950 was part of Seiko's domestic market collection. Powered by the 4428 caliber with 24j jewels beating at 21,600 bph, it delivers a 59 hours power reserve. [seikata-wm-17b698ca9fc0]

Also known as: UFO, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

15.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Navy

Jewels

24j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1984

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