O2 XDA Terra is actually exactly the same as the HTC Herald P4350 or the Dopod C800. The O2 Xda Terra is powered by TI’s OMAP 850 201 MHz processor, 128 MB ROM, 64 MB RAM. It has a 2.8-inch 65k color 240×320 TFT LCD touchscreen, a sliding QWERTY keyboard, Bluetooth 2.0, IEEE 802.11 b/g WiFi, a 2 Megapixel Camera and a microSD slot.
The O2 Xda terra will run the Windows Mobile 6 Professional OS instead of WM5 running on the P4350.