Seiko Cal. 5666 - 727

This Hand-Winding model from 1987 features a 45mm Hardlex-Coated Steel case. With its 19mm lug width and 8.7mm profile, it sits comfortably on most wrists. [seikata-wm-d0f29780250c]

Also known as: Panda, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

8.7mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

19j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1987

Related Models

• Seiko 3850-795
• Seiko 5673-271
• Seiko 6230-929
• Seiko 7155-840
• Seiko 5649-511
• Seiko 6283-485
• Seiko 3849-650
• Seiko 3864-184
• Seiko 5250-147
• Seiko 5288-446
• Seiko 4475-894
• Seiko 0715-509