... polymer battery; 3. Backlight LCD screen; 4. CE, FCC. Direct USB Type Bar MP3 Player (EM646) Features:1. Capacity: 256M,512MB, 1GB ... lock up, battery power display, and FM (optional);7. Battery type: rechargeable lithium polymer battery;8. Battery lifespan: 6 to 8 ... in the Trade Manager.We have passed CE/FCC/ROHS/ REACH authentication test! Inquire Now, Best Price Will Provide to You! Direct USB Type ...