Seiko Cal. 6631 - 351

The Seiko 6631-351 represents an important milestone in Seiko's 1979 lineup. It features a White dial protected by a Acrylic crystal and offers 160m of water resistance. [seikata-wm-37128a8c4600]

Also known as: Silverwave, Goldfeather

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

35mm

Case Thickness

11.6mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

160m

Dial Color

White

Jewels

24j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1979

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