Seiko Cal. 6658 - 870

The Seiko 6658-870 represents an important milestone in Seiko's 1991 lineup. It features a Green dial protected by a Acrylic crystal and offers 200m of water resistance. [seikata-wm-19c7957591a8]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

9.6mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Green

Jewels

20j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1991

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