The Ultimate Music Experience !Sport exercise headphone, with HD music play, enjoying music and other audio when doing exercise! Highly compatible Bluetooth 4.0, you can connect the headphone easily with your phone. It also has built-in microphone, which can answer the call conveniently without holding your phone. Special magnet attached design prevents tangles when 2 plugs stick together. Light weight makes you easy to wear it even a long time.Features:- Supportmulti-point connection, connect with two different devices at the same time.- Cancall or answer the phone.- Supportvoice report numberautomatically.- Supportvoice remindingfunction.- Withpower consumption displayfunction for iPhone.- Withvioce controllingfunction.- Supportsong switching.- CVC 6.0 smartnoise reduction.Specifications:Profile support: HSP / HFP / A2DP / AVRCPCable length: 600mmBrand:aweiModel :A920BLWearing type :In-EarFunction :Song switching, Multi connection function, Bluetooth, Voice control, Answering phoneConnectivity :WirelessApplication :SportDriver unit:11.5mmSound channel:Two-channel (stereo)Frequency response :20-20000HzImpedance :16ohms±15 percentSensitivity :110dB + / - 3dBOutput power:10mwTalk Time:6hMusic Time:4hStandby time:200hCharging time:1hBluetooth:YesBluetooth version:V4.0Bluetooth distance:W/O obstacles 10mPackage weight:0.102 kgProduct size (L x W x H) :65 x 2.4 x 1.2 cm / 25.55 x 0.94 x 0.47 inchesPackage size (L x W x H) :18 x 9.7 x 3.1 cm / 7.07 x 3.81 x 1.22 inchesPackage contents:1 x A920BL Bluetooth Earphone, 1 x USB Charging Cable, 1 x Bilingual User Manual in English and Chinese , 2 x Pair of Earbuds, 1 x Cable Clamp, 1 x Pair of Ears Caps