Seiko Cal. 4423 - 454

This Spring Drive model from 1965 features a 40mm Titanium case. With its 21mm lug width and 8.4mm profile, it sits comfortably on most wrists. [seikata-wm-24ea70bea581]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

8.4mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Black

Jewels

30j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1965

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