Seiko Cal. 6661 - 311

The 6661-311 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6661 caliber with 29j jewels beating at 21,600 bph, it delivers a 63 hours power reserve. [seikata-wm-9ad1c17f1a88]

Also known as: Crown

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

34mm

Case Thickness

10.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

60m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1975

Related Models

• Seiko 6676-615
• Seiko 7037-961
• Seiko 6649-358
• Seiko 7170-998
• Seiko 4534-907
• Seiko 7052-905
• Seiko 6386-950
• Seiko 4436-222
• Seiko 6231-185
• Seiko 4459-595
• Seiko 6231-976
• Seiko 7019-667