Seiko Cal. 6617 - 633

The Seiko 6617-633 represents an important milestone in Seiko's 1989 lineup. Powered by the 6617 caliber with 20j jewels beating at 21,600 bph, it delivers a 45 hours power reserve. [seikata-wm-75b4fd7d156d]

Also known as: UFO, Arnie

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

41mm

Case Thickness

9.8mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

110m

Dial Color

Black

Jewels

20j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1989

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