Seiko Cal. 6681 - 313

The Seiko 6681-313 represents an important milestone in Seiko's 1967 lineup. The Fixed bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-83f5db988832]

Also known as: UFO, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

46mm

Case Thickness

8.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

50m

Dial Color

Cream

Jewels

25j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1967

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