Seiko Cal. 4420 - 780

Seiko 4420-780

This Kinetic model from 1971 features a 43mm Hardlex-Coated Steel case. It features a Navy dial protected by a Hardlex crystal and offers 140m of water resistance. [seikata-wm-9b60b861d4d3]

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
43mm
Case Thickness
8.1mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
140m
Dial Color
Navy
Jewels
28j
Frequency
21,600 bph
Power Reserve
53 hours
Year
1971

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