Features:*Advanced Bluetooth V4.1 Technology ensure super-fast data transmission and stable performance:*Super Sound Quality,DSP and CVC 6.0 Noise Cancellation Technology, bring you clear sound effect. *Convenient to controlling your music and calls:Support Touch button function which lets you easily controlling your music. It also supports hands-free with high-grade microphone*Integrated Multi-Point Technology:Can simultaneously connect two smarts phone. So you can seamlessly switch between your business and personal phones. *Easy to use:Q2 Headset supports Voice Prompt, letting you easily to operate the headset.*Perfectly Compatibility:Compatible with almost all Bluetooth-enabled mobile devicesSpecification:Model Number: Q2Bluetooth Version: Bluetooth 4.1 (Bluetooth Chip: CSR8615); Class 2.Supports HSP, HFP, A2DP, AVRCP, Apt-X protocol.Operation range: Up to 10 metersMicrophone Sensitivity: -42 dBNoise reduction: DSP and CVC 6.0RF Transmitter Power: 90dB(more stable)Response Range: 20-2000KHzSensitivity: 101.5dB±3dBImpedance: 32ΩHigh-quality 3.7V / 55mAh Rechargeable Li-ion batteryMusic Playing Time: about 4 hours (The Music Volume will affect the time)Talk Time: 4.5hoursStandby Time: 180 hoursCharge Time: 1.5hoursCharge Port: Micro USBColor: Gold, Rose Gold,Silver,Black,Gray (Optional)And after being paired to the PC Bluetooth DONGLE, you can play the computer's various audio and you can also use the voice chat, to achieve wireless QQ, MSN, SKYPE, etc.Functions:* Open-----up switch,the blue light will flash three times.* Close-----down switch,the red light will flash three times.* Answer the calls-----Press the phone answer key to answer or short press the headset’s touch key to answer or say "yes” to the microphone on the headset.* Hang up-----Press the phone hang up key to refuse or short press the headset’s touch key to hang up.* Refuse the phone-----Press the phone hang up key to refuse or long press the headset’s touch key to refuse or say "no” to the microphone on the headset* Music Play-----In music playback mode, short press multi-touch keys to play or pause.* Next----In music playback mode,long press the "Vol+" button for 2 seconds to the next song.* Previous-----In music playback mode,long press the "Vol-" button for 2 seconds to the previous song.* If the Bluetooth headset is difficult to search or difficult to match ,the Bluetooth headset can be restored to factory settings ----- Open the headset power,then press the "touch key", "volume +" and "volume -" three keys at the same time Until both the red and blue lights light up for 1.5 seconds,then release, you can restore the factory settings.* Language switch ----- Please put the Bluetooth headset into the paired state (red and blue lights flashing) double-click the touch key to achieve language switching.Package list :1 * Bluetooth earphone1 * USB Cable1 * Pair of Earbud1 * English / Chinese User Manual1 * Retail box