Seiko Cal. 4428 - 731

Seiko 4428-731

This Kinetic model from 1997 features a 46mm Gold-Plated case. Powered by the 4428 caliber with 27j jewels beating at 21,600 bph, it delivers a 61 hours power reserve. [seikata-wm-d1a50ead153f]

Also known as: World Timer

Specifications

Movement
Kinetic
Case Material
Gold-Plated
Case Width
46mm
Case Thickness
13.8mm
Lug Width
19mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
100m
Dial Color
Silver
Jewels
27j
Frequency
21,600 bph
Power Reserve
61 hours
Year
1997

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