Seiko Cal. 4556 - 686

This Spring Drive model from 1969 features a 44mm Hardlex-Coated Steel case. It features a Burgundy dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-f3a047e9638e]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

13.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Burgundy

Jewels

18j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1969

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