Seiko Cal. 6668 - 688

This Spring Drive model from 1992 features a 39mm Hardlex-Coated Steel case. With its 22mm lug width and 15.8mm profile, it sits comfortably on most wrists. [seikata-wm-4172b60b078e]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

15.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

90m

Dial Color

Navy

Jewels

35j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1992

Related Models

• Seiko 6186-464
• Seiko 7125-933
• Seiko 3846-128
• Seiko 7122-140
• Seiko 6369-809
• Seiko 6133-387
• Seiko 5243-311
• Seiko 4548-464
• Seiko 7099-680
• Seiko 3871-980
• Seiko 6184-576
• Seiko 3842-260