Fangrui Product Features 1?��Bluetooth 5.0, built?in rechargeable lithium battery, charged for 1hour, can be used for 4 hours, hands?free call, AUX interface. 2?��Bluetooth transmission mode (TX), convert wired audio into Bluetooth signal, and transmit it to the Bluetooth device for output. 3?��Bluetooth receiving mode (RX), receiving Bluetooth signal and transmitting to wired audio via Bluetooth connection. 4?��Connect the TV 3.5mm/0.14in audio interface, transmit the sound to the earphone via Bluetooth, and connect the 3.5mm audio interface, the speaker without Bluetooth function can also play wirelessly. 5?��Connect the Bluetooth connector to the car's AUX port through the adapter/transfer cable (standard), connect the Bluetooth to the car stereo, not only can make calls, but also listen to dynamic music. 6?��CD?level enjoyment of lossless sound quality, high resolution, no delay in listening to songs, low power consumption, high speed, stable signal transmission. Specification Item Type: Bluetooth?AUX?Adapter Material: Plastic Colour: Black Working Range: Approx. 10m/10.9yd (without Obstacles) Charging Time: 1h Use Time: 4h Suitable Type: computer, TV, projector (transmission mode)/speaker, earphone (receiving mode) Package List 1 x Bluetooth AUX Adapter1 x Data Cable1 x Audio Plug1 x Manual