<p><b><i>Call / Music Setting on PC and Software like Skype, Zoom, MS Team, etc:</i></b></p> <p> </p> <p>Connected headset to your PC, enter Control Panel - Sound - Set Bluetooth Hands-free Audio as default audio device; Set Bluetooth Audio Input Device as default microphone device; Once it set correctly, please confirm that the default device of your calling software also has been set correctly (if there is no sound for first-time use, double-click MFB to activate headset);</p> <p> </p> <p><b><i>If you want to listen to music on Windows system, please follow steps below:</i></b></p> <p> </p> <p>Enter the Control Panel - Sound - Set Bluetooth Audio Renderer as the default audio device; Set Bluetooth Audio Input Device as the default microphone device</p> <p> </p> <p><b><i>If the headset sound has been adjusted to the maximum but still can not hear the sound, please try to adjust the volume through the computer.</i></b></p> <p><b><i><br></i></b></p> <p></p> <p> </p> <p><b>SPECIFICATION: </b></p> <p> </p> <p>Talk time: 22 hours (50% volume) </p> <p>Standby time: 200 hours </p> <p>Charging time for headset: 2 hours </p> <p>Battery capacity for headset: 230mAh </p> <p>Charging voltage: 5V DC</p> <p>Wireless standard: V5.0 </p> <p> </p> <p>Wireless range: up to 50ft </p> <p> </p> <p>Support: HSP, HFP, A2DP, AVRCP, GATT</p> <p><br></p> <p></p> <p> </p> <p></p> <p> </p> <p><b>Packing List:</b></p> <p> </p> <ul> <li>Headphone*1</li> <li>Charging cable*1</li> <li>3.5mm audio cable</li> <li>Manual *1</li> </ul>