Seiko Cal. 6689 - 987

The Seiko 6689-987 represents an important milestone in Seiko's 1970 lineup. Powered by the 6689 caliber with 23j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-4d4d33606f74]

Also known as: UFO

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

9.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

120m

Dial Color

Silver

Jewels

23j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1970

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