Seiko Cal. 4563 - 456

This Spring Drive model from 1967 features a 37mm Two-Tone case. It features a Green dial protected by a Sapphire crystal and offers 40m of water resistance. [seikata-wm-8a641e3bdf4b]

Also known as: World Timer, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

10.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Green

Jewels

18j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1967

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