AAC advanced codec and local music storage for audio and offline playback. Compatible with mobile phones, tablets, and headphones. 3D surround sound: press the 3D button to switch to 3D surround from regular audio sources, enhancing immersion. Integrated microphone supports hands calling. Longlasting streaming and easy reconnect: a 300 mAh battery provides up to 12 hours of use. Supports charging while streaming and automatically reconnects with previously paired devices for quick, seamless connections. fidelity audio: LDAC support and low latency enable CDquality stereo streaming for compatible sources. Reliable wireless technology: Bluetooth 5.0 delivers improved transmission efficiency, stable connections, and ultralow power consumption. Use scenarios Daily commute or travel: enjoy stored music with quality audio, switch to 3D surround for an immersive listening experience, and rely on automatic reconnection for fast reconnection after phone calls. Home entertainment and calls: pair with a phone or tablet for LDACenabled, lowlatency audio during videos or music, use the integrated mic for clear hands calls. Exercise and outdoor use: long battery life supports extended listening sessions, with stable Bluetooth 5.0 connectivity to reduce dropouts during activity.