Seiko Cal. 6656 - 138

The 6656-138 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6656 caliber with 17j jewels beating at 21,600 bph, it delivers a 69 hours power reserve. [seikata-wm-11323c8db9c7]

Also known as: Bellmatic, Emperor

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

41mm

Case Thickness

13.3mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Cream

Jewels

17j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1985

Related Models

• Seiko 7155-356
• Seiko 3840-986
• Seiko 4521-668
• Seiko 4559-380
• Seiko 7125-270
• Seiko 5680-110
• Seiko 6628-544
• Seiko 7198-717
• Seiko 5267-223
• Seiko 7031-213
• Seiko 4440-940
• Seiko 5662-534