1). Support formats MP3/WMA/WAV/ASF 2). Support 5 kinds of music modes 3). Preset EQ and realize 60000 kind tridimensional sound effect 4). Recording function ( with VOX technology,128MB (38 hours) 5). 7 AAA alkaline battery, support the playing time of above 10 hours 6). A-B repeat function, hell reading, rotative playing 7). Multi EQ optional (pop, classic, jazz, rock, normal.) 8). Synchronized song Chinese / English lyric display 9). Accessories: USB cable, installation disk, headphone, user manual and charger