Seiko Cal. 6635 - 373

The Seiko 6635-373 represents an important milestone in Seiko's 1970 lineup. The Inner Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-936da9dd372f]

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

13.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

28j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1970

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