Seiko Cal. 6646 - 635

Released in 1975, the Cal. 6646 with design code 635 was part of Seiko's domestic market collection. The Rotating bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-bef4eea48ce0]

Also known as: UFO, Bellmatic

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

35mm

Case Thickness

14.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

40m

Dial Color

Champagne

Jewels

20j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1975

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