Seiko Cal. 6656 - 728

The Seiko 6656-728 represents an important milestone in Seiko's 1975 lineup. Powered by the 6656 caliber with 27j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-3f5ffe603767]

Also known as: Rally

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

38mm

Case Thickness

11.1mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

60m

Dial Color

Green

Jewels

27j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1975

Related Models

• Seiko 6121-265
• Seiko 7191-517
• Seiko 6174-929
• Seiko 7016-287
• Seiko 3876-856
• Seiko 4489-531
• Seiko 6171-296
• Seiko 6644-895
• Seiko 7099-747
• Seiko 6395-283
• Seiko 5658-320
• Seiko 5625-847