"Device or SIM-related information (only for specific services/functionalities): information related to your device. For example, IP address, IMEI number. The AndroidX Webkit SDK collects SSID, BSSID, MAC address, WIFI information, sensor, application list information, clipboard."
The app collects IMEI numbers, and a third-party SDK (AndroidX Webkit/Chromium) accesses clipboard contents, installed application lists, WiFi network identifiers, and sensor data — far beyond what a headphone companion app needs.