Seiko Cal. 6331 - 621

The Seiko 6331-621 represents an important milestone in Seiko's 1968 lineup. The Coin-Edge bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-09ee239feeb9]

Also known as: Silverwave

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

12.4mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Black

Jewels

26j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1968

Related Models

• Seiko 5210-973
• Seiko 3838-294
• Seiko 6290-773
• Seiko 6363-905
• Seiko 6147-979
• Seiko 4580-849
• Seiko 0795-316
• Seiko 4562-348
• Seiko 6655-604
• Seiko 7062-408
• Seiko 6225-931
• Seiko 4413-616