Features:  -HiFi high fidelity sound surging heavy bass.  -Large capacity life, long standby time.  -Support TV/PC/Phone/Tablet/Laptop/MP3/MP4/DVD player/TV Box Audio.    Specification:  bluetooth version: V5.0;  Speaker: 5W*4;  bluetooth distance: 10M;  Battery capacity: 2000mA 3.7V;  Nominal voltage: DC 5V;  Music playing time: about 3 hours;  Standby time: 240 hours;  1A Charging time: about 2 hours;  Audio Input: Bluetooth,RCA,3.5mm Aux, TF card ,USB;  Dimension: 550 x 50 x 50mm / 21.65 inch x 1.97 inch x 1.97 inch;  Net Weight: 585g;  FM Radio Frequency: 87.5-108;  Accessories: charging cable, 3.5MM-RCA cable, remote control, manual;  Support TV/PC/Phone/Tablet/Laptop/MP3/MP4/DVD player/TV Box Audio;    Package Including:  1 * Speaker;  1 * Charging Cable;  1 * 3.5MM-RCA cable;  1 * Manual