Seiko Cal. 6657 - 472

This Spring Drive model from 1974 features a 42mm Stainless Steel case. With its 19mm lug width and 11.5mm profile, it sits comfortably on most wrists. [seikata-wm-5a730acdc578]

Also known as: World Timer, Crown

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

11.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Black

Jewels

32j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1974

Related Models

• Seiko 6286-727
• Seiko 4540-519
• Seiko 7066-253
• Seiko 7029-689
• Seiko 4472-169
• Seiko 6631-407
• Seiko 6653-670
• Seiko 7082-920
• Seiko 6398-294
• Seiko 6286-394
• Seiko 0756-324
• Seiko 6250-638