Seiko Cal. 6647 - 881

The 6647-881 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6647 caliber with 31j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-3a00e12722a6]

Also known as: UFO, Flighty

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

42mm

Case Thickness

8.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

160m

Dial Color

Navy

Jewels

31j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1969

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