Seiko Cal. 6646 - 333

Released in 1971, the Cal. 6646 with design code 333 was part of Seiko's domestic market collection. With its 22mm lug width and 8.5mm profile, it sits comfortably on most wrists. [seikata-wm-e2a9dec83bff]

Also known as: Monster, Emperor

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

39mm

Case Thickness

8.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Cream

Jewels

26j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1971

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