Multipurpose Phone Speakers

Portable Mini Bluetooth multipurpose loud speakers in round design offers Great Sound with vibrant membrane, which could support MP3 function TF/Micro sd card & FM & AUX input and NFC hands-free calls function, easy for daily life. Operation with five keys. Built-in 400mAH Li-ion battery. Made of MBOM plastics. Perfect For Your Home, Office, Party, College, School Or Outdoor events as a brand promotion with your custom logo. Loudspeaker Output: 3W, Input Sensitivity less than 400mV, Distortion less than 0.5%, Frequency Response: 60Hz-18KHz, Working Voltage: 3.7V, Charging Voltage: 5V.