Seiko Cal. 4428 - 286

The 4428-286 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4428 caliber with 28j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-68274f776a01]

Also known as: Golden Tuna, Emperor

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

44mm

Case Thickness

11.4mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Champagne

Jewels

28j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1993

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