Seiko Cal. 6628 - 311

The 6628-311 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6628 caliber with 27j jewels beating at 28,800 bph, it delivers a 54 hours power reserve. [seikata-wm-774438d1aabd]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

10.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

70m

Dial Color

Champagne

Jewels

27j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1991

Related Models

• Seiko 7178-331
• Seiko 6155-262
• Seiko 6217-357
• Seiko 7073-286
• Seiko 6322-608
• Seiko 5210-499
• Seiko 7091-323
• Seiko 3834-503
• Seiko 0794-389
• Seiko 6383-531
• Seiko 7122-447
• Seiko 6372-573