This is a cycle computer that came with the road bike I purchased here. I'm selling two of them together; I will not sell them separately. Both have been tested and are working. Both units have new batteries installed. The batteries have been removed from the sensor units. * There is only one spoke magnet (last image) that attaches to the spokes and synchronizes with the sensor as it rotates. * The white cycle computer is slightly yellowed. Instruction manual included (the model number is listed as CC-RD100 in the manual, but the content is the same). Suitable for parts or repairs. I will ignore discount comments that use standard phrases and do not state a price. Please be sure to state your desired price. I will strictly refuse to do business with those who can only communicate silently, or who are slow and lax with all procedures.