Seiko Cal. 6664 - 878

The Seiko 6664-878 represents an important milestone in Seiko's 1982 lineup. With its 18mm lug width and 15.6mm profile, it sits comfortably on most wrists. [seikata-wm-e0733a38b753]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

15.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Champagne

Jewels

35j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1982

Related Models

• Seiko 5682-906
• Seiko 5271-114
• Seiko 4517-722
• Seiko 0726-939
• Seiko 4448-127
• Seiko 6336-702
• Seiko 6693-322
• Seiko 4510-360
• Seiko 6338-121
• Seiko 4438-361
• Seiko 7195-846
• Seiko 5239-611