Bluetooth Transmitter Receiver 3.5mm Stereo Interface 2 in 1 Bluetooth Adapter for TV Projector Car Speaker Computer                       Feature:     1. [V5.0] Bluetooth adapter has Bluetooth 5.0 chip, faster transmission speed, more stable connection and lower power consumption.      2. [One Key Control] 2 in 1 Bluetooth transmitter receiver one key operation, convenient and quick, switch on and off, answer and hangup.      3. [For Car Speaker] When driving, connect the mobile phone to the B12S via Bluetooth, and plug the 3.5mm cable into the car to enjoy music.      4. [RⅩ Mode] RⅩ mode changes to Bluetooth speaker in seconds, traditional speaker is connected to AUX or RCA speaker port.       5. [Basic Parameters] Working Time: More than 5 hours; Charging Time: About 1 hour; Input or Output Connection: 3.5mm stereo interface.             Specification:                           Item Type: Bluetooth Transmitter Receiver   Material: PVC  Bluetooth: 5.0  Transmission Distance: Approx. 10m / 33ft  Working Time: More Than 5 Hours  Charging Time: About 1 Hour  Input or Output Connection: 3.5mm Stereo Interface  Built in Lithium Battery: 220mAh (included)                                  Package List:      1 x Bluetooth Transmitter Receiver      1 x Manual      1 x Cable                 How to use:       1. Press and hold the power to turn on the power, and the Bluetooth mode is turned on           2. Pairing is complete