Seiko Cal. 4578 - 340

This Solar model from 1976 features a 41mm Two-Tone case. It features a Silver dial protected by a Hardlex crystal and offers 170m of water resistance. [seikata-wm-a546456ab4c4]

Also known as: Helmet

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

41mm

Case Thickness

11.1mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Silver

Jewels

32j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1976

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