Features:  Superior Sound Quality: Enjoy your music in 8W full-bodied stereo realized through dual high-performance drivers and unique enhanced bass.  Capacitive Touch Control: Easy-to-use touch controls allow you to amplify the mood and energy of the party. Change tracks, volume and pair effortlessly with just a simple touch.  Portable and Versatile: Enjoy high definition stereo sound with impressive volume whether you're lounging, partying, camping, hiking or biking.  Extended Playtime: Built-in Li-Ion rechargeable battery powers up to 20 hours of playtime at 50% volume. Recharge in 1-2 hours with the included micro USB cable.    Specification:  Bluetooth version: V5.0;  Battery capacity: 1500mAh (built in);  Endurance time: 5-8 hours;  Charging time: 5 hours;  Speaker: 20W * 2;  Input sensitivity: 400mV;  Wireless transmissin distance: 10 meters;  Frequency response: 100~20KHz (+-3dB);  Signal-to-noise ratio:  ≥95dB;  Playback formats: WAV, MP3, WMA, FLAC, APE;  TF maximum support: 32G（not included）;  Mode of operation: press key;  USB line length: 50CM;  Input voltage: DC 5V 2A;  Interface type: micro USB / AUX / TF card socket / 2.0 USB;  Weight: 681g;  Size: 64*51*40.5cm;    Package Included:  1 x Speaker;  1 x Charging Cable;  1 x Type-C Cable