Sony CLIE PEG-TH55/U Handheld Palm OS version 5.2, Sony Handheld Engine processor, 32 MB RAM Built-in 310K Pixels CMOS Camera with 2x Digital Zoom (JPEG, 640 x 480 resolution), audio player, and video player High resolution TFT Color Display (480 x 320 dots, 65,536 colors) Integrated Memory Stick slot (compatible with optional Memory Stick Pro media) Internal lithium-ion polymer rechargeable battery