Seiko Cal. 6610 - 881

The Seiko 6610-881 represents an important milestone in Seiko's 1983 lineup. Powered by the 6610 caliber with 21j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-694aabd92bfb]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

35mm

Case Thickness

10.0mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

60m

Dial Color

White

Jewels

21j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1983

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