Q9 Wireless Bluetooth 4.1 EDR Stereo Earbuds Sport Earphone Headphone Headset for SmartphoneFeatures:Hands free. While you are listening your music、 you can control your wireless deviceSweat-proof、 durable design、 Up to 4-6 hours of Talk\/Playing Time and 150 hours Standby TimeHigh-fidelity stereo music and clear speech、 You can begin enjoying CD quality stereo sound instantly.Compatible with iOS、 Android、 and Windows.Specification:Model: Q9Wireless version: CSR V4.1+EDRWireless profile: heads free、 A2DP、 AVRCPOperation distance: 10mTalk time: 4-6hoursStandby time : 150hoursCharging time: about 1.5hoursCharging port: Micro USBHoe to Use:          Function       Operation           Cancel a call       Short press MFB once           Answer a call       Short press MFB once           Reject a call       Long press MFB about 2 seconds until you hear a tone           End a call       Short press MFB once           Redial the last number       Double click MFB           Call transfer (headset to phone)       Press and hold MBF for 2 seconds           Call transfer (phone to headset)       Press and hold MBF for 2 seconds           Microphone mute       Double click MFB           Cancel mute       Double click MFB   Package Included: 1 x Q9 Bluetooth EDR Sport Headset1 x Bag1 x User manual1 x USB wire4 x Ear Cap4 x Accessories