Transmitter AUX 3,5 Mm Wireless Adapter Music Wireless Adapter For Phones : Easy to use: insert USB into the USB of the TV/computer, LED quickly enter Bluetooth searches Turn on the Bluetooth headset/Bluetooth speaker to go to the pairing state, and the product will automatically search for a connection USB power supply: connect 35mm audio to the aux interface of the product and the TV/computer/MP3 player, and LED will start quickly to go to the Bluetooth search state Turn on the Bluetooth headset/Bluetooth speaker to go to the pairing state Easily add Bluetooth to your car audio system,home stereo system,speakers, wired headphones with additional socket aux 3,5 mm -slim design with a minimum plug area of 3,5 mm Plug and play,simple setting, one key operation and clear status indication Bluetooth 52 connection: audio delay, noise reduction, improved speed and range, dual audio and backward compatibility Cvc80 and DSP noise reduction can eliminate and block invasive background noise, creating lossless audio-quality music Using the transmitter profile (TX) via the 3,5 mm audio jack allows the TV/projector to easily turn on Bluetooth Specification: product: USB wireless audio transmitter Bluetooth version: 5.2 EDR Input port: USB/AUX Transmission distance:> 15 meters Frequency Range: 2.402GHZ-2.480GHZ Supported protocols: SBC, A2DP, AVRCP Power supply: USB 5V Size: 12x7 cm contains: 1 USB Bluetooth transmitter 1 . audio 3,5 mm 1 antenna 2DB 1 instruction