Seiko Cal. 4561 - 378

Seiko 4561-378

The 4561-378 is a sought-after Spring Drive piece from Seiko's golden era. It features a Burgundy dial protected by a Hardlex crystal and offers 120m of water resistance. [seikata-wm-80788d46d8ce]

Also known as: Monster, Bullhead

Specifications

Movement
Spring Drive
Case Material
Gold-Plated
Case Width
34mm
Case Thickness
12.4mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
120m
Dial Color
Burgundy
Jewels
24j
Frequency
28,800 bph
Power Reserve
63 hours
Year
1966

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