Seiko Cal. 6661 - 878

The 6661-878 is a sought-after Automatic piece from Seiko's golden era. It features a Black dial protected by a Hardlex crystal and offers 130m of water resistance. [seikata-wm-93202e76d498]

Also known as: Bellmatic, Emperor

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

34mm

Case Thickness

13.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Black

Jewels

26j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1965

Related Models

• Seiko 5661-216
• Seiko 5690-357
• Seiko 7178-380
• Seiko 0746-303
• Seiko 7119-515
• Seiko 0769-764
• Seiko 3878-660
• Seiko 5244-472
• Seiko 3843-202
• Seiko 5698-422
• Seiko 6342-857
• Seiko 6121-280