Brand: HP Series: iPAQ Model: rx1955 CPU Type: Samsung S3C CPU Speed: 300MHz Resolution: 240 x 320 Screen Size: 3.5" Display Type: TFT Display Color Depth: 64K color (65,536 colors) 16-bit Memory: 32M RAM, 64M ROM Operating System: Windows Mobile 5.0 for Pocket PC, Premium Edition IrDA: Yes WirelessLAN: 802.11b Speaker: Yes Headphone: one 3.5mm stereo headphone jack Mic: Yes Navigator: 4 programmable application quick-launch buttons, 5-way navigation joystick Stylus: Yes Touch Screen: Yes SD Card Slot: Support 1-bit/4-bit SDIO, SD/MMC type memory standard, and mini SD memory cards with SD adapters Memory Stick Slot: No Battery Type: Removable/rechargeable 1100 mAh Lithium-lon (user changeable) Cable Interface: 1 USB cable connects to PC Dimensions: 4.47" x 2.78" x 0.5" Weight: 4.4oz Unit Price: GBP60