Making phone calls:Be sure the earphone connected with your mobile phone, then you can make phone calls. when making calls, there is only one side earphone working, and it would remind incoming call and report calling numbers. You answer the call by slightly press the power button one time and refuse to answer by quick press the power button 2 times. When the earphones are in music mode, you dial your latest number by quick press the power button 2 times (redial the latest number). Listening to music:Be sure the earphone connected with your mobile phone, then you can listen to music on your music list. Shortly press the power button to stop the music and replay by press again. Power off:Long press the power button until led in red when not use, the Bluetooth device enter off mode. It would be power off automatically when the earphone away from your Bluetooth device over 5 minutes. Do not need to worry power exhausted. Charging:Using the Nokia mini-charging interface, fully charged the battery in 80 minutes. There is reminding sound when battery is low, and the led would flash in red at the same time. When taking charge, the led would be in red, and turns in blue when fully charged. Note: the earphone would be forced shut down when charging even if they are power ON before charging.