Seiko Cal. 6633 - 646

The Seiko 6633-646 represents an important milestone in Seiko's 1981 lineup. With its 22mm lug width and 12.3mm profile, it sits comfortably on most wrists. [seikata-wm-421b2a573b8b]

Also known as: Emperor

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

12.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Navy

Jewels

19j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1981

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