Volume adjustment, Bluetooth hands-free call answering, one-touch control, simple operation.
Three port output to charge three different devices.
It supports most fast charging protocols like SCP, FCP, PPS, PD 3.0, QC 3.0 / QC 4.0, MTK PE +, etc.
Battery voltage can be tested automatically at startup.
Built-in HD microphone, one touch to answer incoming calls, reject, hang up and redial the last number.
Music playback is supported by external flash disk / TF card.