Seiko Cal. 4428 - 996

The 4428-996 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4428 caliber with 25j jewels beating at 28,800 bph, it delivers a 42 hours power reserve. [seikata-wm-a2908035a69d]

Also known as: Bullhead

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

11.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Black

Jewels

25j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1970

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