Seiko Cal. 4576 - 591

This Spring Drive model from 1970 features a 35mm Hardlex-Coated Steel case. It features a Navy dial protected by a Hardlex crystal and offers 120m of water resistance. [seikata-wm-c6c1ba12633f]

Also known as: Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

10.5mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

120m

Dial Color

Navy

Jewels

31j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1970

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