Main Features:  -Built-in 2000 mAh battery, easy to carry out.  -Built-in 4 high-definition speakers, shocking sound quality, 360-degree stereo surround.  -Bluetooth connection to play, 3.5 audio cable to connect to mobile phone, TV, RCA cable to connect to TV, insert TF card, U disk to play, with FM radio function.    Specification:   Channel: 2.0;  bluetooth Version: V4.2;  Speaker: 5W x 4;  Bluetooth Distance: 10m;  Nominal Voltage: DC 5V;  Music Playing Time: about 3h;  Standby Time: 120h;  Charging Time: about 4h;  Audio Input: bluetooth, USB, 3.5mm Aux, TF card;  Support: TV/PC/Phone/Tablet/Laptop/MP3/MP4/DVD player/TV Box Audio;  Battery Information Battery Type: Li-ion battery;  Battery Capacity: 2000mAh;  Dimension Package Weight: 1.2kg;  Package Size: 40.70 x 14.50 x 7.00 cm;    Package Contents:  1 x Speaker;  1 x RCA Audio Cable;  1 x Charging Cable;  1 x 3.5mm Audio Cable;  1 x Manual