Seiko Cal. 6631 - 801

The Seiko 6631-801 represents an important milestone in Seiko's 1978 lineup. It features a Champagne dial protected by a Acrylic crystal and offers 160m of water resistance. [seikata-wm-9c971546774d]

Also known as: Rally

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

44mm

Case Thickness

11.8mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Champagne

Jewels

21j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1978

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