Seiko Cal. 4428 - 296

The 4428-296 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4428 caliber with 27j jewels beating at 28,800 bph, it delivers a 40 hours power reserve. [seikata-wm-7c8dec887484]

Also known as: Crown

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

39mm

Case Thickness

11.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1967

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