HP iPaq HX2490 Pocket PC Powerful Pocket PC with 520 MHz Intel XScale processor and Windows Mobile 5.0 operating system Integrated WiFi (802.11b) and Bluetooth networking; 64 MB RAM and 128 MB flash ROM Expandable via CompactFlash type II (CF) and Secure Digital (SDIO) slots; IR and USB sync ports 3.5-inch transflective TFT display with 64,000 colors; rechargeable lithium-ion battery for long life Includes HP encryption security; measures 4.71 x 3.01 x 0.65 inches (W x H x D); 1-year warranty