Seiko Cal. 6646 - 244

The Seiko 6646-244 represents an important milestone in Seiko's 1967 lineup. The Bidirectional bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-30afe6cf7fb1]

Also known as: World Timer, Flighty

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

37mm

Case Thickness

11.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Silver

Jewels

17j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1967

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