It is compatible with laptops, MP3/4 devices, TF/USB Flash Drive, or any audio device that is Bluetooth compatible or has a 3.5mm jack input.
With the Bluetooth, it sends good interference-free performance, high data rate, high quality and efficiency.
Function: Bluetooth/Line in Audio connection, FM radio, TF card,USB,Hards-free calling
Bluetooth standard: 2.1+EDR
Lithium Battery capacity: 1200mAh.
Output Power: 6W=3W×2
Frequency response: 100Hz-20Khz S/N>85dB
Charging time: 3-4hours
Play time : 5-8hours