3D surround sound function: With the 3D button you can switch to 3D and enjoy surround sound from regular sound sources. Integrated microphone for hands calling. Continuous streaming and automatic repairing: A 300 mAh quality polymer battery provides up to 12 hours of use. Supports charging while streaming and automatically repairs with existing paired devices. AAC codec and music storage: Supports AAC advanced codec and music storage, suitable for use on mobile phones, tablets and headphones. Bluetooth 5.0: version of Bluetooth 5.0 improves transmission efficiency and stability while delivering ultralow power consumption. LDAC and low latency: Supports LDAC and low latency for CDquality stereo streaming. Use scenarios On the go: enjoy immersive sound with the 3D surround function while commuting or exercising, from regular audio sources. Mobile entertainment: watch videos or listen to fidelity music on mobile devices with LDAC and low latency for a CDquality stereo experience. Hands communication: use the builtin microphone for convenient hands calls in meetings, transit, or while multitasking.