Play: MP3, WMA, ASF Support. Recording: Voice Recording, Line-In Recording Built In Memory: 128M/256M FM Frequency: 87.5MHz ~ 108MHz USB: USB Storage Device (USB 1.1) LCD: Color OLED FM Reception: Auto Detection Battery: 1 AAA alkaline battery Audio: 32-bits Philips MCU Play Back: More than 8 hours Equalizer: Normal,Jazz,Rock,Classic,Bass,Metal Speed: Fast, Slow, Repeat A to B Folder: Support 500 folders and 1500 playable files support 2 languages: English and Chinese