Seiko Cal. 6668 - 550

The 6668-550 is a sought-after Solar piece from Seiko's golden era. Powered by the 6668 caliber with 31j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-a6db628c9cce]

Also known as: Monster, Emperor

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

44mm

Case Thickness

15.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Burgundy

Jewels

31j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1971

Related Models

• Seiko 4516-997
• Seiko 6343-271
• Seiko 6113-622
• Seiko 7113-584
• Seiko 4461-306
• Seiko 0770-695
• Seiko 4578-112
• Seiko 6268-826
• Seiko 4583-489
• Seiko 3839-531
• Seiko 6114-919
• Seiko 6215-906