Seiko Cal. 4540 - 424

This Spring Drive model from 1969 features a 37mm Gold-Plated case. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 170m of water resistance. [seikata-wm-1fa8d4e8b5d9]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

11.4mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1969

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