Seiko Cal. 6635 - 680

The Seiko 6635-680 represents an important milestone in Seiko's 1985 lineup. Powered by the 6635 caliber with 17j jewels beating at 21,600 bph, it delivers a 59 hours power reserve. [seikata-wm-65ccd6b626c0]

Also known as: Bullhead

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

45mm

Case Thickness

9.0mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Cream

Jewels

17j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1985

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