Seiko Cal. 6678 - 699

The Seiko 6678-699 represents an important milestone in Seiko's 1971 lineup. Powered by the 6678 caliber with 26j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-da6ae2e2bed2]

Also known as: Monster

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

11.4mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

180m

Dial Color

Black

Jewels

26j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1971

Related Models

• Seiko 6198-444
• Seiko 5247-220
• Seiko 4474-883
• Seiko 7175-435
• Seiko 6676-612
• Seiko 7186-483
• Seiko 5285-771
• Seiko 5241-377
• Seiko 5640-833
• Seiko 0764-776
• Seiko 6259-553
• Seiko 3893-817