[1] These devices were advertised as being a "personal entertainment communicator",[1] a purpose not dissimilar to the Apple iPod Touch released in 2007.
Two models were released, featuring a "palm-top" clamshell design, with a landscape tilting and swiveling LCD screen.
A UX70h model with integrated cellular capabilities was also developed, but never saw public release.
[2] The processor used on the UX series was the Sony Handheld Engine CXD2230GA.
[3] At the time of release this processor was bleeding edge, demonstrating new improvements in both capability integration and power efficiency in a single System-on-a-chip.