Seiko Cal. 5678 - 658

The Seiko 5678-658 represents an important milestone in Seiko's 1971 lineup. It features a Green dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-da9a6855740b]

Also known as: Helmet, Bellmatic

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

34mm

Case Thickness

9.6mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Green

Jewels

35j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1971

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