Seiko Cal. 4428 - 541

The 4428-541 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4428 caliber with 19j jewels beating at 36,000 bph, it delivers a 45 hours power reserve. [seikata-wm-19b7c1914b5f]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

8.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Black

Jewels

19j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1993

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