Seiko Cal. 6657 - 843

The 6657-843 is a sought-after Spring Drive piece from Seiko's golden era. With its 21mm lug width and 14.4mm profile, it sits comfortably on most wrists. [seikata-wm-9c2aff7734ec]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

14.4mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

120m

Dial Color

Cream

Jewels

34j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1978

Related Models

• Seiko 7091-480
• Seiko 4518-395
• Seiko 6154-352
• Seiko 4590-611
• Seiko 4474-604
• Seiko 7076-681
• Seiko 6397-787
• Seiko 0786-314
• Seiko 6319-424
• Seiko 7196-952
• Seiko 5263-896
• Seiko 4580-187