Seiko Cal. 6617 - 270

The Seiko 6617-270 represents an important milestone in Seiko's 1981 lineup. The Bidirectional bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-043deff252df]

Also known as: Helmet, UFO

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

12.3mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Black

Jewels

33j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1981

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