Seiko Cal. 4427 - 997

Seiko 4427-997

This Kinetic model from 1968 features a 42mm Hardlex-Coated Steel case. Powered by the 4427 caliber with 36j jewels beating at 28,800 bph, it delivers a 38 hours power reserve. [seikata-wm-1c0f183fca04]

Also known as: Helmet

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
42mm
Case Thickness
9.2mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
50m
Dial Color
Silver
Jewels
36j
Frequency
28,800 bph
Power Reserve
38 hours
Year
1968

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