Seiko Cal. 6650 - 670

The 6650-670 is a sought-after Solar piece from Seiko's golden era. The Bidirectional bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-af367dbdf449]

Also known as: Monster, Bullhead

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

8.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Navy

Jewels

25j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1965

Related Models

• Seiko 7160-226
• Seiko 6373-300
• Seiko 7060-861
• Seiko 4558-881
• Seiko 6217-106
• Seiko 6614-250
• Seiko 3866-726
• Seiko 4431-158
• Seiko 4568-961
• Seiko 6636-444
• Seiko 6653-197
• Seiko 7036-936