Seiko Cal. 4428 - 950

Seiko 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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