Seiko Cal. 6635 - 107

The Seiko 6635-107 represents an important milestone in Seiko's 1971 lineup. Powered by the 6635 caliber with 18j jewels beating at 28,800 bph, it delivers a 39 hours power reserve. [seikata-wm-02be361bf395]

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

10.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1971

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