Seiko Cal. 6635 - 787

The Seiko 6635-787 represents an important milestone in Seiko's 1979 lineup. Powered by the 6635 caliber with 25j jewels beating at 36,000 bph, it delivers a 55 hours power reserve. [seikata-wm-80c2d9556f9d]

Also known as: Baby Tuna, Emperor

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

40mm

Case Thickness

12.7mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Champagne

Jewels

25j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1979

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