... 2, built-in1500mah lion battery 3,SNR:>90db portable USB speaker LD-97FM1. Input voltage DC 5V 2. ... 90dB 6. Built-in rechargeable battery 1500mAh 7. with USB,SD,MMC slot 8. with a stereo FM radio ... .direct one.which plays MP3 and other music store2.can be accessed by computers, cell phones, MP3 and ... other music players.3.built-in lithium battery, can be accessed by USB or power charge; 4.wooden frame. 5 ...