Seiko Cal. 4558 - 788

The Seiko 4558-788 represents an important milestone in Seiko's 1968 lineup. It features a Navy dial protected by a Acrylic crystal and offers 110m of water resistance. [seikata-wm-b1707f5cae6e]

Also known as: Helmet, Bellmatic

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

44mm

Case Thickness

9.5mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Navy

Jewels

34j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1968

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