Seiko Cal. 4561 - 578

This Spring Drive model from 1966 features a 40mm Titanium case. With its 20mm lug width and 9.3mm profile, it sits comfortably on most wrists. [seikata-wm-a255dcfdef7a]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

9.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

150m

Dial Color

Green

Jewels

26j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1966

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