Seiko Cal. 5658 - 318

The Seiko 5658-318 represents an important milestone in Seiko's 1977 lineup. It features a Black dial protected by a Hardlex crystal and offers 130m of water resistance. [seikata-wm-e0eaac1e9115]

Also known as: Helmet, Silverwave

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

15.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Black

Jewels

36j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1977

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