... Backlight LCD screen; 4. CE, FCC. Direct USB Type Bar MP3 Player (EM646) Features:1. Capacity: 256M,512MB, 1GB, ... 2GB,4GB,8GB(Optional);2. Audio format: MP3,WMA,ASF ... battery power display, and FM (optional);7. Battery type: rechargeable lithium polymer battery;8. Battery lifespan: 6 ... Will Provide to You! Direct USB Type Bar MP3 Player (EM646)