LDAC support with low latency for CDquality stereo streaming. AAC codec support and music storage; suitable for use with mobile phones, tablets and headphones. 3D surround sound function: press the 3D button to switch to 3D and enjoy surround sound from regular audio sources. Integrated microphone for hands calling. Continuous streaming and automatic repairing: 300 mAh polymer battery provides up to 12 hours of use, supports charging and streaming at the same time, and automatically repairs with existing paired devices. Bluetooth version 5.0: improved transmission efficiency, stable connection and ultralow power consumption. Use scenarios: Daily mobile listening: connect to a phone or tablet for quality wireless audio and occasional hands calls. Home or travel use: extended battery life supports long listening sessions, with charging while streaming. Office or gym activities: reliable connection with low latency, enabling smooth music playback and hands calls during workouts or work.