Seiko Cal. 5623 - 725

This Spring Drive model from 1972 features a 43mm Hardlex-Coated Steel case. It features a Black dial protected by a Acrylic crystal and offers 150m of water resistance. [seikata-wm-5191942bfbb5]

Also known as: Bellmatic, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

15.3mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

150m

Dial Color

Black

Jewels

25j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1972

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