Seiko Cal. 7023 - 172

This Spring Drive model from 1973 features a 40mm Hardlex-Coated Steel case. It features a Black dial protected by a Hardlex crystal and offers 130m of water resistance. [seikata-wm-f4b67c1e268a]

Also known as: Tuna, World Timer

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

9.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

130m

Dial Color

Black

Jewels

21j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1973

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