HP iPAQ HX4705 Pocket PC WLAN 802.11b, Bluetooth 1.2, IrDA (FIR), USB and Serial Microsoft Windows Mobile 2003 Second Edition software for Pocket PC 624 MHz Intel Bulverde technology-based processor 192 MB total memory (128 MB ROM and 64 MB SDRAM) 4 Transflective type VGA TFT color, 64K colors, LED backlight