Seiko Cal. 4420 - 997

Seiko 4420-997

The 4420-997 is a sought-after Spring Drive piece from Seiko's golden era. It features a Green dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-a092e8e39ec2]

Also known as: Turtle

Specifications

Movement
Spring Drive
Case Material
Gold-Plated
Case Width
42mm
Case Thickness
9.2mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
100m
Dial Color
Green
Jewels
19j
Frequency
36,000 bph
Power Reserve
37 hours
Year
1985

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