Seiko Cal. 4520 - 780

Seiko 4520-780

The 4520-780 is a sought-after Spring Drive piece from Seiko's golden era. It features a Navy dial protected by a Sapphire crystal and offers 170m of water resistance. [seikata-wm-0942015b294f]

Also known as: Samurai

Specifications

Movement
Spring Drive
Case Material
Titanium
Case Width
39mm
Case Thickness
13.4mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
170m
Dial Color
Navy
Jewels
35j
Frequency
21,600 bph
Power Reserve
63 hours
Year
1977

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