Seiko Cal. 6646 - 447

The Seiko 6646-447 represents an important milestone in Seiko's 1987 lineup. The Inner Rotating bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-f025f4eb5208]

Also known as: Tuna, Rally

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

10.9mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Burgundy

Jewels

27j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1987

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