Seiko Cal. 6657 - 326

The 6657-326 is a sought-after Spring Drive piece from Seiko's golden era. The Fixed bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-8d4ef8759ba3]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

8.0mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

40m

Dial Color

Black

Jewels

21j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1980

Related Models

• Seiko 6388-721
• Seiko 6220-794
• Seiko 7096-745
• Seiko 5278-877
• Seiko 3875-833
• Seiko 4529-161
• Seiko 5682-794
• Seiko 6231-613
• Seiko 6395-266
• Seiko 0769-273
• Seiko 6191-886
• Seiko 5677-826