The HTC Desire Z is the latest Android phone in HTC's Desire range of handsets. Unlike the standard Desire and Desire HD models, the Z includes a slide-out QWERTY keyboard, along with newly designed digital face buttons rather than the somewhat mechanical buttons the standard Desire features.
The Desire Z an impressive 3.7-inch Super LCD capacitive touch-screen display (800x480), and includes a new improved version of the HTC Sense User Interface.
Elsewhere, the Desire Z also includes a 5.0 mega-pixel camera with digital zoom , LED flash and 720p HD video recording functionality.
Powered by the latest Android 2.2 (Froyo) software, the Desire Z includes all the functionality and features that made the Desire such a popular handset, and more!
Other features of this stellar handset include push email, microSD card support for expandable memory, media player, GPS with Google Maps, an email attachment viewer, 3.5mm headphone jack, web browser and support for all key social networking services, including Facebook, MySpace and Twitter.
Source : http://androidphone.org.uk/phones/htc/htc-desire-z/