Seiko Cal. 6631 - 330

The Seiko 6631-330 represents an important milestone in Seiko's 1999 lineup. Powered by the 6631 caliber with 36j jewels beating at 21,600 bph, it delivers a 42 hours power reserve. [seikata-wm-dde1184b4281]

Also known as: Goldfeather

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

9.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

80m

Dial Color

Burgundy

Jewels

36j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1999

Related Models

• Seiko 7069-778
• Seiko 0725-268
• Seiko 3813-520
• Seiko 7194-913
• Seiko 7084-934
• Seiko 6360-434
• Seiko 4525-625
• Seiko 6196-761
• Seiko 5271-275
• Seiko 6238-301
• Seiko 6138-225
• Seiko 6373-608