1) 3D surround sound function With the 3D button, switch to 3D and enjoy surround sound from regular sound sources. Integrated microphone for hands calling. Continuous streaming and automatic repairing: equipped with a 300mAh quality polymer battery, it can provide up to 12 hours of use time, supports charging and streaming at the same time, and can automatically repair with existing paired devices. 2) AAC advanced codec and music storage Supports AAC advanced codec and music storage; suitable for use with mobile phones, tablets and headphones. 3) LDAC and low latency Supports LDAC and low latency, with CDquality stereo streaming. 4) Bluetooth 5.0 Adopts Bluetooth 5.0 compatible technology, providing improved transmission efficiency, stability and ultralow power consumption. Use scenarios Home entertainment and gaming: connect to a TV or computer, enable 3D surround sound for immersive audio, while the builtin microphone allows quick hands calls. Mobile use and calls: pair with a smartphone or tablet for wireless music and hands conversations on the go, with automatic repairing to existing devices. Travel and daily commuting: long battery life of up to 12 hours supports prolonged use, with stable Bluetooth 5.0 connectivity for reliable streaming and audio syncing.