Seiko Cal. 6647 - 664

The 6647-664 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6647 caliber with 32j jewels beating at 36,000 bph, it delivers a 36 hours power reserve. [seikata-wm-16e1e06456aa]

Also known as: UFO, Crown

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

34mm

Case Thickness

14.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

120m

Dial Color

Green

Jewels

32j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1983

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