2.8-inch, 260K full-color TFT display Supports multiple music formats: MP3, WMA and WAV with good timber and real audio frequency display Supports MPEG-4 video playback, full-screen display Built-in high fidelity 8 Ohms speaker Supports card-inserting function: mini SD card, 128 to 4GB High-definition JPEG picture browse function Digital record, A to B replay function Energy-saving setting, brightness adjustable, customized power off time Good timber, supports 3-D EQ surrounding effect and customized EQ High-speed USB 2.0 port Supports E-book function with bookmark Supports internal 8GB flash memory Portable U-disk function Supports firmware upgrade Battery: built-in high-quality Lithium batteries Battery working duration: Video: six hours MP3: ten hours Voice recording: 12 hours Operating system: Windows SE, ME, 2000, XP, Mac OS 10, Linux 2.4.2 and 98 (requires to install the program)