Seiko Cal. 6644 - 904

The Seiko 6644-904 represents an important milestone in Seiko's 1999 lineup. Powered by the 6644 caliber with 24j jewels beating at 28,800 bph, it delivers a 43 hours power reserve. [seikata-wm-322cc578589a]

Also known as: Helmet, Navigator

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

35mm

Case Thickness

14.1mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

70m

Dial Color

Cream

Jewels

24j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1999

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