1.USB and USB C fast charging Battery voltage detection 2.Support Bluetooth hands-free calling 3.LED screen, can display frequency, song number and working status information 4.Support power and memory function 5.2 mobile phones charge at the same time, support charging while listening to songs 6.Precise structural design, piano paint appearance 7.Noise cancellation function, built-in noise cancellation circuit, make the call sound clearer
