Specification: Input voltage: DC/5V Transmission distance: 15 meters Bluetooth version: Bluetooth 5.0 Input interface: 3.5MM audio Driver: No need to install Range of use: This Bluetooth adapter can be used for almost all For digital products with audio input/output (3.5MM audio interface), you only need to connect the audio to the input/output. Package includes: 1pcs/bag (host, 3.5mm audio cable, manual) Plug in and enjoy wireless life, four-in-one USB Bluetooth adapter. Accept RX+transmit TX two-in-one design, dual-signal one-key switching is simple and convenient to use, suitable for multiple devices. One key to answer/hang up the call, when you have an incoming call in the receiving mode, press the button to answer the call hands-free. Receiving/transmitting-key switch, dual signal and one key switch, can receive and transmit. Connect the computer to Bluetooth speakers/earphones, the transmission range can reach 15 meters, enjoy the original music.