Seiko Cal. 6631 - 613

The Seiko 6631-613 represents an important milestone in Seiko's 1992 lineup. The Coin-Edge bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-34e7fc10d69d]

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

9.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Black

Jewels

21j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1992

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