Seiko Cal. 6680 - 391

Released in 1976, the Cal. 6680 with design code 391 was part of Seiko's domestic market collection. The Inner Rotating bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-253ae5de0902]

Also known as: UFO

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

35mm

Case Thickness

11.1mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Champagne

Jewels

22j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1976

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