Product DetailsSport Wireless Bluetooth 4.1 Stereo Ear-hook Earphones Ergonomic Bluetooth Earsets Key Specifications/Special Features:Features:Sport wireless Bluetooth 4.1 stereo ear hook earphoneBluetooth: V4.1Drive unit: 8mm Bluetooth profiles supported: HSP, HFP, A2DP and AVRCPOperating distance: 10 meters Charging connector: Micro USBSport Wireless Bluetooth 4.0 Stereo Ear-hook Earphones Ergonomic Bluetooth EarsetsNamebluetooth wireless headphoneApplicable modelsiphone, Android,PCTypesport headphoneMusic timeup to 10 hoursSlotUSBTalking timeup to 10 hoursStandby time330 hoursCharge time2.5 hoursFrequency range20-20KhzSupport profilesA2DP,AVRCP,HFP, HSPButtonVol-. Vol+, Pre, Next, Play/Pause, Power on/Power offDistance10mOEMacceptPort of loadingGuangdong ShenzhenColoroptionalSport Wireless Bluetooth 4.0 Stereo Ear-hook Earphones Ergonomic Bluetooth Earsets PictureSport Wireless Bluetooth 4.0 Stereo Ear-hook Earphones Ergonomic Bluetooth EarsetsRecommendations: Double Ear Wireless Bluetooth Earphones Stereo Earsets                                      In-ear Waterproof Bluetooth Earphones Ergonomic Bluetooth Earpieces                                     Mini Stereo Bluetooth Earphones Ergonomic Bluetooth Earsets                                     Lightweight Sweatproof Bluetooth Earphones Noise cancellation Bluetooth Earpieces