Seiko Cal. 4428 - 772

The 4428-772 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4428 caliber with 26j jewels beating at 36,000 bph, it delivers a 42 hours power reserve. [seikata-wm-da4cb884a77a]

Also known as: Tuna, Rally

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

38mm

Case Thickness

12.1mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

26j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1990

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