.Precise Magnet Suction Function: This function is to turn on/off the headphone and pair the model the first time you turn it on.</br>.Noise Cancellation Technology: Use CVC noise cancellation technology reduces outside noises you can enjoy crystal music and clearer microphone sound.</br>.Sound Quality: Full HD soundstrong bass pipe and high sensitivity microphone emphasize low tones for a clear realistic optimum sound quality.</br>.Durable and Stylish: Up to 4-5 hours talking/ music time 2 hours charging time 100 hours standby with a single charge.</br>.Package Inclues:1x V4.0 Wireless Bluetooth Headset 1x Charge USB Cable 3x Silicone Ear Buds 1x User Manual.</br></br>Product Description</br></br><br>Bluetooth version: Bluetooth V4.0<br> Bluetooth profiles: HFPHSPA2DP and AVRCP<br> Operating distance :30feets<br> Charging input: DC5.0/500mA<br> Weight About :10g<br> <br> <b>FAQ:</b><br> <br> <b>?.Why can not turn the headset on?</b><br> <br> Please charge it and make sure your dvice was fully charged before using it for the first time.<br> <br> <b>??.There is no sound?</b><br> <br> Check the connection between your device with phone or computer??if the connection is not established??please reconnect it again??And adjust the volume level to a suitable level.<br> <br> <b>??.Phone or computer can not find your device?</b><br> <br> Check the bluetooth is 'BT'in your phone or computer??if pair time out??pairing mode will exit??please re-enter pairing mode??if your phone application have some problems??please re-star the phone??if your device have problem re-star or reset it.<br> <br></br><br/>http://www.amazon.com/gp/product/B01MZZGIZ8