when adjusting volume the headphones make a beep soundYou can answer calls with them as well as play, pause, skip songs and volume up and volume down. There is a total of three touch sensitive buttons on the right headphone where the micro USB port and microphone are also located. On the left headphone, you find the 3.5 mm audio socket.
3.5 mm audio socketThe other two buttons are for adjusting the volume up and volume down, skip-track back and skip-track forwards. To skip songs, light tap the either button. To increase or decrease volume, press and hold either button.
micro USB cable and male 3.5 mm to male 3.5 mm audio cable included
As far as the specs of the Aukey EPB18, they feature Bluetooth 4.0 version, as well as other Bluetooth profiles that allow you hands free calling (HFP and HSP), remotely play/pause and skip songs (AVRCP) and wirelessly transmit stereo audio (A2DP).