Seiko Cal. 6631 - 684

Released in 1994, the Cal. 6631 with design code 684 was part of Seiko's domestic market collection. With its 20mm lug width and 11.5mm profile, it sits comfortably on most wrists. [seikata-wm-aca22bd2e84c]

Also known as: Sportsmatic

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

11.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Silver

Jewels

35j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1994

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