It supports MP3, WMA, and WAV. The sound quality are nearly perfect and are much superior than its counterparts with the same price range. Buy it Now and Enjoy and magnificent quality! Features: Ultra Slim and Compact Design Supports Multiple File Formats: MP3, WMA, WAV Capable of upgrading firmware. FM functions: Capable of storing 40 channels Record functions: to record your favorite FM channels or through its built-in microphone E-Book function support USB Storage Drive: it can act as a storage drive through USB Multiple mixer and playing mode. Sleep mode and battery save mode. ID3 Tag Support Built-in rechargeable battery    Products Specifications Display 128*64 OLED Color Display Connections USB 2.0, Flash Disk Memory Size 1GB Battery 10 hours Continuously Support Formats MP3, WMA, WAV Support OS Windows98/SE/ME/2K/XP Interface English, Chinese Very solid built but compact body! Also available in white and black in colors. Packages: Earphone Intelligent Charger Program CD USB Cable Manual