Transmitter & Receiver: 3 in 1 design bluetooth adapter, there are 2 modes (TX and RX), it can be a transmitter and also a receiver. TX (red light) mode is for the transmitter and RX (blue light) is for the receiver. it can turns non-Bluetooth PC or laptop into Bluetooth-capable. Pairing name (receiver mode): ZF-360Note: Before use, you must hold down the center switch to turn on the power. In the reception mode, you can adjust the volume and change up and down. Long press the left / right function keys to adjust the volume and short press to adjust the tracks up and down. The middle button is the pause button.Bluetooth 5.0 adapter: the bluetooth dongle is more stable and faster. Typically, there will be no signal interference within 10 meters. high quality stereo music and practicality. Be freer and enjoy the wireless environment with this 3 in 1 Bluetooth adapter. This way, you can enjoy high quality music wirelessly or listen to late night shows without disturbing your loved ones while they sleep.No driver needed: it is equipped with 3.5mm AUX audio cable, compatible with TV, speakers, tablets, PC computer, phone, earphones and other bluetooth audio (3.5mm Aux). You can allow cars without Bluetooth function to play music via the car's AUX, USB interfaceWith USB charging cable: Integrated battery, 300 mAh lithium battery capacity, sustainable playback for 10 hours; [Package Includes: 1x bluetooth adapter pc; 1 x 3.5mm Audio Cable of 50cm; 1x USB charging cable, 1x English manual.]