Seiko Cal. 5666 - 639

The 5666-639 is a sought-after Spring Drive piece from Seiko's golden era. With its 19mm lug width and 12.3mm profile, it sits comfortably on most wrists. [seikata-wm-0fb4f0dc5afb]

Also known as: Goldfeather, Navigator

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

12.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

120m

Dial Color

Silver

Jewels

21j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1995

Related Models

• Seiko 4426-569
• Seiko 0796-563
• Seiko 4463-141
• Seiko 6626-118
• Seiko 0766-945
• Seiko 6176-468
• Seiko 4480-759
• Seiko 3821-102
• Seiko 6673-559
• Seiko 6628-931
• Seiko 6137-793
• Seiko 5227-943