Seiko Cal. 6656 - 161

The Seiko 6656-161 represents an important milestone in Seiko's 1970 lineup. Powered by the 6656 caliber with 19j jewels beating at 21,600 bph, it delivers a 48 hours power reserve. [seikata-wm-85eae2d6a23c]

Also known as: Sumo, Navigator

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

37mm

Case Thickness

8.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Champagne

Jewels

19j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1970

Related Models

• Seiko 3865-847
• Seiko 6148-380
• Seiko 7081-710
• Seiko 4533-910
• Seiko 7093-215
• Seiko 5660-179
• Seiko 7197-856
• Seiko 7148-143
• Seiko 6215-717
• Seiko 6178-872
• Seiko 3862-600
• Seiko 7126-514