Seiko Cal. 6687 - 434

The Seiko 6687-434 represents an important milestone in Seiko's 1971 lineup. Powered by the 6687 caliber with 36j jewels beating at 21,600 bph, it delivers a 66 hours power reserve. [seikata-wm-82ef232cf439]

Also known as: UFO

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

44mm

Case Thickness

12.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Champagne

Jewels

36j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1971

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