USB Bluetooth 5.0 Audio Receiver Transmitter Wireless Adapter The product is shipped based on the color or size of the main image of the product page. Wireless Audio Transmitter & Receiver Technologies: BT5.0, A2DP, AVRCP (rceiver mode only) Operation Range: Up to 10m / 33tf (without any blocking objects) Pairing name(Receiver mode): SY317 Transmitter mode: red LED light is on Receiver mode: blue LED light is on Dimensions: 32mm*17mm*8.2mm Package Include: 1x Bluetooth 5.0 Audio Transmitter/Receiver Adapter 1x 3.5mm Aux Cable 1x User Manual 1.This extremely portable, lightweight wireless audiotransmitter & receiver is an ideal wireless audio solutionfor a wide range of situations and uses 2.Transmitter mode: wirelessly streams audio from your non-Bluetooth TV, home stereo system, or CD player to your Bluetooth headphones or speakers 3.Receiver mode: wirelessly streams audio from yourBluetooth-enabled phone, tablet, or computer to yourwired stereo, speakers, or headphones 4. Mode switching: 1) If the device has been in a mode for a long time, it needs to be re-energized twice to switch to another mode. 2) If