Seiko Cal. 6650 - 680

The 6650-680 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6650 caliber with 34j jewels beating at 21,600 bph, it delivers a 45 hours power reserve. [seikata-wm-c226ff287b03]

Also known as: Baby Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

41mm

Case Thickness

14.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Navy

Jewels

34j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1977

Related Models

• Seiko 5224-528
• Seiko 3812-641
• Seiko 4462-809
• Seiko 7037-173
• Seiko 6345-613
• Seiko 0717-793
• Seiko 6116-938
• Seiko 4581-377
• Seiko 4548-359
• Seiko 6338-691
• Seiko 6693-977
• Seiko 5242-988