Seiko Cal. 4428 - 517

The 4428-517 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 4428 caliber with 30j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-b59d2c31b5ff]

Also known as: Silverwave, Bellmatic

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

9.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Burgundy

Jewels

30j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1973

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