Seiko Cal. 4428 - 525

The 4428-525 is a sought-after Spring Drive piece from Seiko's golden era. The Inner Rotating bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-fc16477f9a06]

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

9.8mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Navy

Jewels

33j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1976

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