Seiko Cal. 6646 - 559

The Seiko 6646-559 represents an important milestone in Seiko's 1978 lineup. The Inner Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-908440b220bc]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

36mm

Case Thickness

8.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Black

Jewels

27j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1978

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