Seiko Cal. 6661 - 655

The Seiko 6661-655 represents an important milestone in Seiko's 1970 lineup. Powered by the 6661 caliber with 20j jewels beating at 21,600 bph, it delivers a 39 hours power reserve. [seikata-wm-470621f49cd4]

Also known as: Baby Tuna

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

15.9mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

100m

Dial Color

White

Jewels

20j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1970

Related Models

• Seiko 7079-259
• Seiko 6299-849
• Seiko 4548-690
• Seiko 4433-683
• Seiko 3822-400
• Seiko 5667-517
• Seiko 5289-855
• Seiko 6619-139
• Seiko 5291-423
• Seiko 6138-871
• Seiko 5290-865
• Seiko 4596-973