Seiko Cal. 6641 - 328

The Seiko 6641-328 represents an important milestone in Seiko's 1996 lineup. The Coin-Edge bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-56daab2ae588]

Also known as: Bullhead, Goldfeather

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

8.9mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Silver

Jewels

27j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1996

Related Models

• Seiko 4485-813
• Seiko 7198-359
• Seiko 6227-306
• Seiko 0750-827
• Seiko 7190-638
• Seiko 6382-598
• Seiko 3838-984
• Seiko 7092-967
• Seiko 6396-593
• Seiko 4513-866
• Seiko 5616-470
• Seiko 6196-930