Seiko Cal. 6631 - 320

The Seiko 6631-320 represents an important milestone in Seiko's 1994 lineup. It features a Green dial protected by a Hardlex crystal and offers 120m of water resistance. [seikata-wm-37037119e832]

Also known as: World Timer, Crown

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

10.1mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Green

Jewels

31j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1994

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