Seiko Cal. 6670 - 390

The 6670-390 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6670 caliber with 23j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-751b8f693666]

Also known as: Monster

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

46mm

Case Thickness

9.4mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

60m

Dial Color

Blue Sunburst

Jewels

23j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1976

Related Models

• Seiko 6117-970
• Seiko 5697-269
• Seiko 7172-482
• Seiko 6178-256
• Seiko 4554-191
• Seiko 7174-879
• Seiko 4488-899
• Seiko 3863-467
• Seiko 5261-898
• Seiko 6356-334
• Seiko 0764-866
• Seiko 5669-925