Seiko Cal. 6635 - 580

The Seiko 6635-580 represents an important milestone in Seiko's 1969 lineup. Powered by the 6635 caliber with 32j jewels beating at 36,000 bph, it delivers a 55 hours power reserve. [seikata-wm-1c710cf575b0]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

12.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

50m

Dial Color

Champagne

Jewels

32j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1969

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