The product is a pair of Dell Axim X51V Pocket PC PDAs that are part of the Windows Mobile series. Made by Dell, these PDAs are part of the Axim X51 line, known for their sleek design and powerful capabilities. The model number X51V indicates that they are specifically the Axim X51V variant, offering users a reliable and efficient device for their mobile computing needs. Though not tested, these PDAs hold the potential to provide a smooth and convenient user experience for those familiar with the Windows Mobile operating system.