Features:-You can play MP3 WMA format audio files in TF card and U disk, and support 32g.-With FM radio function, the built-in 87.5-MHz FM digital radio module can automatically store 50 stations.-Bluetooth connection can play songs.-Chargeable battery.-AUX audio input interface.Specifications:Optional color: red/white/blackBluetooth version: Jie Li 4.0Battery: 18650 1200mAhOutput power: 5 W signal-to-noise ratio: 50dB, frequency range: 50-20 KHZ,Speaker specifications: 4 Euro 5 W single speakerAUX interface: 3.5Product Size:Size: 123*81*130mmPacking List:1*speaker1*USB cable1*color box