Our Bluetooth adapter receiver. Designed for non-Bluetooth audio systems. For your various non-Bluetooth home audio systems or car speakers, this is the ideal solution to achieve ideal wireless audio. A device has two purposes, the dual mode is not only a receiver or a transmitter, making your life more intelligent. Specification: 1. Bluetooth: V5.0 2. Audio Port: 3.5mm 3. Material: ABS 4. Support A2DP V1.2 5. Powered By 5V DC 6. Power Supply Mode: USB POWER 7. Transmission distance: <=15m Very Easy to Use: 1. Plug the device into the USB port to supply power (such as car charging, wall charging, power bank, etc.), 2. The device light flashes red quickly, connect the device with your non-Bluetooth audio device with a 3.5MM audio cable 3. Turn on the mobile phone Bluetooth, search for Bluetooth devices (wireless music adapter), click and connect 4. The pairing is successful and start to enjoy wireless music. SomeSpecial Features: 1. Plug and Play, Wide Compatibility, No battery, No driver. 2. Hands-free call: Built-in intelligent noise reduction high-definition microphone, you can talk hands-free. Our noise reduction technology makes your conversation clearer. 3. Now make Non- Bluetooth device into Bluetooth device like speakers, car, home theater speaker. Note: 1. Before connecting, make sure that your phone is not connected to other devices. 2. USB just powers the device. Cannot transfer audio and transfer files. And only one Bluetooth device can be connected in transmitter mode. 3. Plug in if you see the red light flashing ,means at TX mode , if no red light , you plug it out and plug in again,it will beacome red light. Package includes: 1 X Bluetooth Transmitter&Receiver 1 X 3.5MM Audio Cable 1 X User Manual