Seiko Cal. 6643 - 895

The 6643-895 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6643 caliber with 20j jewels beating at 28,800 bph, it delivers a 60 hours power reserve. [seikata-wm-11670117448c]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

46mm

Case Thickness

12.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Burgundy

Jewels

20j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1980

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