Adopt the version of Bluetooth compatible V5.0, which can provide the best transmission efficiency, stability and ultra-low power consumption. Support LDAC AptX and AptX low latency, with CD-quality stereo streaming Support AAC advanced codec and music storage, suitable for use on mobile phones, tablets and headphones; Unique 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-free calling;Continuous streaming and automatic re-pairing: Equipped with a 300mAh high-quality polymer battery, it can provide up to 12 hours of use time, support charging and streaming at the same time, and can automatically re-pair with existing paired devices. Stable connection: Our Bluetooth compatible adapter is equipped with a Bluetooth compatible 5.0 chip for stable pairing, fast transmission and wide signal (33 feet) It can be connected to non-Bluetooth compatible car audio systems, home stereos, headphones/speakers, amplifiers/home theaters, etc. through a 3.5mm AUX port and 2 RCA ports. Model: MR230PRO Bluetooth compatible: BT5.0 Support: LDAC aptX wireless adapter Band: 3.5mm AUX and 2RCA Battery: Built-in 300mAh polymer battery provides up to 12 hours of battery life Plug adapter: No Note: This is just a Bluetooth compatible receiver, not a transmitter. So you can't use it for keyboard or mouse. The product batches may have differences in appearance, which will not affect the use Colour:As Shown Material:plastic Package Contents: 1 x Bluetooth Audio Receiver set