Seiko Cal. 6635 - 561

The Seiko 6635-561 represents an important milestone in Seiko's 1999 lineup. Powered by the 6635 caliber with 25j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-cdcd57e18670]

Also known as: Monster, Sea Horse

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

9.4mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1999

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