Seiko Cal. 7173 - 578

This Spring Drive model from 1972 features a 42mm Two-Tone case. The Bidirectional bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-1cb97e9d2c9a]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

42mm

Case Thickness

10.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Navy

Jewels

25j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1972

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