Seiko Cal. 5661 - 576

This Automatic model from 1968 features a 43mm Hardlex-Coated Steel case. With its 19mm lug width and 9.8mm profile, it sits comfortably on most wrists. [seikata-wm-5de3794e6b8e]

Also known as: Silverwave

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

9.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Silver

Jewels

35j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1968

Related Models

• Seiko 4411-632
• Seiko 4427-724
• Seiko 4568-590
• Seiko 3816-858
• Seiko 4595-308
• Seiko 6666-743
• Seiko 5673-274
• Seiko 6615-679
• Seiko 5210-396
• Seiko 6179-712
• Seiko 7186-640
• Seiko 7046-383