Seiko Cal. 6657 - 661

This Quartz model from 1965 features a 39mm Stainless Steel case. The Fixed bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-3395b62c64af]

Also known as: Bullhead

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

11.5mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

130m

Dial Color

Champagne

Jewels

17j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1965

Related Models

• Seiko 6154-306
• Seiko 5665-390
• Seiko 5686-831
• Seiko 6360-448
• Seiko 0717-594
• Seiko 5645-902
• Seiko 5293-476
• Seiko 6240-404
• Seiko 6630-857
• Seiko 6330-688
• Seiko 6386-633
• Seiko 6394-198