The O2 XDA Zest is a Windows Mobile 6.1 Professional device, giving access to Microsofts most recent mobile operating system and all integrated into applications that come with it.
O2 XDA Zest certainly seems to have hidden depths. A relatively compact Windows smartphone, the XDA Zest has a resolution VGA display, GPS, WiFi, 3.5G and support 3 megapixel camera.
The Zest support HSDPA provides download speeds of up to 3.6 Mbps, or alternatively you can use the device in the integrated WiFi connectivity. On the back is a 3 megapixel camera with autofocus with VGA resolution video calls camera on the front side. Annoyingly, is audio output through a mini-USB port instead of a standard 2.5 mm or 3.5 mm socket.
The Zest weighs 120.5 grams and measures 102 x 60.5 x 16.5 mm which is slightly larger than the original HTC Touch. The large 1300 mAh battery provides up to 3 hours and 9 Independence day standby on 3G. Inside is a 624MHz Marvell Tavor processor with 128 MB of RAM.
This is not an expensive - O2 XDA Zest will even be available to pay-as-you-go customers for € 250.