Detailsbrand - AEC;Article No - BQ-618;Transmission range - 10m;function - Battery display; call function; music support; multipoint connection;Processing customization - yes;Bluetooth protocol - 5.0;Vocal tract - stereo;How to use - Headworn;Single or double ears - Bilateral stereo;Suitable for gift giving occasions - Employee benefits; business gifts; awards and commemorations;colour - Black; white; blue;Mold Type - Private model;chip type - Jerry ; Product parameters - Speaker specification - 30mmOutput power - 32 Ω 45mWFrequency response - 200Hz-2000HzSensitivity - 120db ± 3dbSignal to noise ratio - ≥ 90DBDistortion - 0.5%Bluetooth standard - Bluetooth 4.1+EDRSupport protocols - HFP; A2DP; AVRCPSupport 3.5mm audio inputPower supply mode - built-in lithium battery 190mAhCharging time - 3 hours (please extend the charging time for the first time)Effective distance - 10mWorking time - more than 10 hoursStandby time - 250 hoursCharging interface - Micro USBBuilt in microphone; supporti