Seiko Cal. 4428 - 617

Seiko 4428-617

This Kinetic model from 1968 features a 36mm Hardlex-Coated Steel case. Powered by the 4428 caliber with 18j jewels beating at 21,600 bph, it delivers a 62 hours power reserve. [seikata-wm-b49f35c467af]

Also known as: Silverwave, Arnie

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
36mm
Case Thickness
14.4mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
160m
Dial Color
Navy
Jewels
18j
Frequency
21,600 bph
Power Reserve
62 hours
Year
1968

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