Seiko Cal. 6687 - 281

The Seiko 6687-281 represents an important milestone in Seiko's 1981 lineup. With its 20mm lug width and 9.2mm profile, it sits comfortably on most wrists. [seikata-wm-426ec59c7973]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

9.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Black

Jewels

27j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1981

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