Seiko Cal. 4591 - 350

This Spring Drive model from 1966 features a 41mm Two-Tone case. It features a White dial protected by a Sapphire crystal and offers 30m of water resistance. [seikata-wm-b08042a0c99c]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

41mm

Case Thickness

12.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

30m

Dial Color

White

Jewels

20j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1966

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