HTC Libra S720 is the CDMA version of the Vox S710, which means it is Windows Mobile Smartphone with side-sliding QWERTY keyboard. Unlike the S710, the S720 has spring assisted mechanism for the slider. Other advantage of the Libra over the Vox is that it replaces the 2G EDGE data with 3G EV-DO which is even upgradable to the faster Rev. A.
As FCC just approved the Libra S720, it can soon become available with Verizon Wireless. The latter is rumored to be the first US carrier to offer it, under the name XV5800 (SMT5800). Hands-on preview of the HTC S720 Libra.