Seiko Cal. 5657 - 401

The Seiko 5657-401 represents an important milestone in Seiko's 1975 lineup. With its 18mm lug width and 13.1mm profile, it sits comfortably on most wrists. [seikata-wm-a855d60b258d]

Also known as: Panda, Goldfeather

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

13.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Burgundy

Jewels

31j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1975

Related Models

• Seiko 6284-669
• Seiko 7033-903
• Seiko 7080-405
• Seiko 7036-166
• Seiko 7192-244
• Seiko 7093-423
• Seiko 6227-769
• Seiko 7055-366
• Seiko 3847-322
• Seiko 5673-557
• Seiko 5257-695
• Seiko 7015-883