Seiko Cal. 6660 - 998

This Spring Drive model from 1989 features a 39mm Hardlex-Coated Steel case. With its 18mm lug width and 13.1mm profile, it sits comfortably on most wrists. [seikata-wm-c72bcd225ecd]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

13.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

170m

Dial Color

Burgundy

Jewels

35j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1989

Related Models

• Seiko 6352-335
• Seiko 6329-476
• Seiko 4455-862
• Seiko 6224-232
• Seiko 4555-954
• Seiko 7083-360
• Seiko 6665-325
• Seiko 6649-444
• Seiko 4523-329
• Seiko 6681-668
• Seiko 4585-120
• Seiko 5256-702