Features:  -Support all Bluetooth device connection.  -Support FM radio, you can directly search for radio stations in the listening area.  -Direct reading of TF card and U disk.  -Support USB/Audio input, provide you with computer speaker function. Can be directly connected to mobile phone/tablet/ and TV Bluetooth pairing to play music.  -HiFi stereo sound, clear treble and dynamic bass bring high audio reproduction, delicate and true acoustic enjoyment.  -Built-in li-ion 2000mAh rechargeable battery guarantees up to 6 hours playtime.    Specifications:  Bluetooth version: 5.0;  Speaker: 4ohm 5W*2;  Transmission distance: about 10m;  Frequency response: 20Hz-20KHz;  SNR: >=85dB;  Working voltage: 3.7V;  Charging voltage: DC5V;  Charging interface: Micro USB;  Battery capacity: 2000mAh lithium battery;  Talking time: about 6h;  Music time: about 3h;  Standby time: >=30 days;  Charging time: about 4h;  USB output: 5V 1A;  Size: 90*88*200mm;  Weight: 0.55kg;  Material: ABS + Metal;  Support Hands-free / USB / AUX;    Packing list:  1 * Bluetooth speaker;  1 * Audio cable;  1 * Charging cable;  1 * Manual