Here is the Atom, a nearly iPod-sized Windows Mobile 5 device with a 2.7″ QVGA screen and quad-band phone functionality. It’s got stereo speakers, a headphone jack, and a battery that can hold its charge for up to three days of moderate/heavy use.
MTekk really liked the XDA Atom, and their Atom review is very in-depth — check it out. Overall, MTekk gives “O2′s XDA Atom a well deserved 8.5/10.”
Sources: Engadget, Pocket PC Thoughts.