Compatible with standard bluetooth-enabled mobile phone, media devicesUnique ring-necked design, opening up a new era of Bluetooth, Ultralight elastic memory material, easy to carry, Vibrate to remind you not to miss any incoming calls, High-fidelity stereo audio earphones enjoy entertainment, Intelligent noise reduction, clearer calls, Long standby, long call. Compatible with standard Bluetooth-enabled mobile phone, media devices. Answer/end/reject a call. Last number redial, voice dialing, transfer a call, call waiting. Specifications: Bluetooth version: V4.0, Battery: Battery 3.7V/180mAh, Standby time/Talk time: Up to 30 hours/ up to 1 hour, Music play time: Up to 8 hours, Charging time: <2 hours Power on / Power off Move the power switch to the 'ON' or 'OFF' positioning Before using the headset for the first time, you must pair it with a Bluetooth-enabled Device. Easy Pairing Move the Power Switch to the "ON" position. If it is your first time paring the device it will automatically enter pairing mode. If it has been paired but no paired device is in range it will enter Pairing mode after 10 seconds. The LED indicator will be Solid Blue On the device you wish to pair, find the Bluetooth menu and "search for" or "add" new devices Select " HBS-730" From the list of devices If asked for a Pass/Pin Code enter 0000 (4 Zero's) Once pairing is complete you will hear a beep and device will vibrate.