Seiko Cal. 6631 - 563

The Seiko 6631-563 represents an important milestone in Seiko's 1984 lineup. With its 22mm lug width and 15.3mm profile, it sits comfortably on most wrists. [seikata-wm-d9f8b8c6d3b0]

Also known as: Silverwave

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

45mm

Case Thickness

15.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

110m

Dial Color

Black

Jewels

25j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1984

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