Seiko Cal. 6644 - 704

The Seiko 6644-704 represents an important milestone in Seiko's 1996 lineup. Powered by the 6644 caliber with 28j jewels beating at 21,600 bph, it delivers a 43 hours power reserve. [seikata-wm-11c721940d2e]

Also known as: UFO, Arnie

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

12.3mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

90m

Dial Color

Black

Jewels

28j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1996

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