Seiko Cal. 6631 - 158

The Seiko 6631-158 represents an important milestone in Seiko's 1992 lineup. With its 22mm lug width and 14.2mm profile, it sits comfortably on most wrists. [seikata-wm-8029ff8361ff]

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

14.2mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Silver

Jewels

35j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1992

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