Specification: Product name: Wireless adapter. Input voltage: DC / 5V. Input interface when transmitting: 3.5MM + usb. Transmission range: 10M. Output interface when receiving: 3.5mm. Whether plug and play: plug and play. Size: 42 * 25 * 11mm. Colour: Black. Single package size: 13X9.5X2 cm Single gross weight:0.030 kg Description： 1.In Transmitter mode, turn a wireless TV, PC, CD player, MP3 / MP4 into wireless transmitter. 2.Receiver mode: great for home or vehicle music streaming sound system. 3.Simply connect this wireless audio receiver to your line-in or auxiliary input on your speakers, pair it to your wireless enabled device, and enjoy the wireless music revolution. 4.Whether you want convenience in your car, through your home-theater system, in your kitchen, bathroom, or bedroom,etc. 5.The audio codec for a richer and deeper sound experience. Listen to CD-like audio quality at no compromise. How to Use: 1.Power on/off Power on: Press and hold the ON/OFF button for 5-7 seconds until you hear a "ready for connecting or a sound", it will auto connect the phone which was paired. Power off: Press and hold the ON/OFF button for 4-5 seconds until you hear a "Long be or red led". 2. Connect the receiver to your speakers With 3.5mm Male to Male Audio Connector or 3.5mm Male to Male Audio Cable to connect the speakers and the receiver (if no sound, Please make sure it was inserted completely). Package includes: 1 X TR6 Bluetooth 5.0 Audio Receiver Transmitter 1 X 3.5MM Audio Cable 1 X User Manual 100% Brand New and High Quality. It Helps Everyone to Be Convenient and Fast. Please Read the Description Part Before Purchasing. Check the quantity and color before buying It is also a good choice as a gift for friends and relatives