Features Segment LCD Display (Only Display Digital And Number) MP3 Music File Playback MMC/SD card slot USB Storage Disk Lock Up Function Specification No driver installation required (except Windows 98 SE) SD/MMC Memory Card for Audio Tracks or Data Files Segment LCD display USB high speed file transfers and data download Lock up function ,Protection data and prevent the mistake action A-B repeat function and constant repeat , take it easy to lean foreign language Have the humanized and single hand the multi-function rolling over the switch operation Origin China Delivery lead time 8-12 days Minimum order 500 pcs