Brand: 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