Seiko Cal. 4428 - 517

Seiko 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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