Yealink Connect is the perfect companion to your headset, allowing you to quickly access device status, manage and control your Bluetooth devices, and personalize your experience even moreDevice Status:Quickly check the headsets remaining battery, version and language information and moreHeadset settings: Further personalize your call and audio experience with feature configuration and mode switching.Personalized audio: Customize your music experience with the music equalizer.Find my headset:Quickly locate the headset by making a sound through itFirmware update: You can update the firmware through the APP to keep your device in the best condition at all times