Seiko Cal. 6644 - 300

The Seiko 6644-300 represents an important milestone in Seiko's 1985 lineup. Powered by the 6644 caliber with 30j jewels beating at 36,000 bph, it delivers a 50 hours power reserve. [seikata-wm-f54ccdac8648]

Also known as: Helmet, World Timer

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

44mm

Case Thickness

8.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

180m

Dial Color

Black

Jewels

30j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1985

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