Seiko Cal. 6658 - 147

The Seiko 6658-147 represents an important milestone in Seiko's 1982 lineup. It features a Black dial protected by a Sapphire crystal and offers 40m of water resistance. [seikata-wm-181f24b02321]

Also known as: Helmet, Flighty

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

34mm

Case Thickness

9.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

40m

Dial Color

Black

Jewels

29j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1982

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