Seiko Cal. 4431 - 740

Seiko 4431-740

The 4431-740 is a sought-after Kinetic piece from Seiko's golden era. It features a Silver dial protected by a Hardlex crystal and offers 200m of water resistance. [seikata-wm-009ae05f837b]

Specifications

Movement
Kinetic
Case Material
PVD Black
Case Width
43mm
Case Thickness
9.2mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
200m
Dial Color
Silver
Jewels
29j
Frequency
28,800 bph
Power Reserve
37 hours
Year
1965

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