Upgraded 4-in-1 USB Bluetooth audio transmitter receiver. Designed for non-bluetooth tv, pc, car / home stereo systems. Humanized design (completely wireless use or AUX assisted use) makes your use more convenient. Button design is easy to use, you can easily switch modes. No batteries, plug and play, With a connection range of up to 10 meters, you can get rid of messy cables and easily experience wireless music. Convenient and compact design makes your audio system look smooth and beautiful | USB Mode: If your non-Bluetooth audio system has a USB jack. You only need to plug our device into a USB jack of a non-Bluetooth audio system. Gently press and hold the function key of the USB Bluetooth transmitter adapter, you can easily switch between transmitter mode or receiver mode (red light is transmitter mode, blue light is receiver mode). Plug and play, no need to install the driver, no need any auxiliary cable, Let you easily enjoy wireless music | AUX Mode: If your non-Bluetooth audio system does not have a USB jack. You can use the included AUX cord to plug into the aux jack of the device. Then plug the device's USB into your USB-powered device (such as car charger / wall charger / mobile power supply) to power the device. Gently press and hold the function key of the device to easily switch the mode of the device (red light is transmitter mode, blue light is receiver mode). Let your device have wireless Bluetooth function immediately | Broad compatibility: Our Bluetooth audio transmitter adapter is easier to use than most transmitter receivers on the market, and the sound quality is clearer. Compatible with most audio equipment on the market. Transmitter mode: You can pair TV, computer, projector and other devices to stream audio to Bluetooth headset, home stereo, etc. In receiver mode: you can transfer music from Bluetooth-enabled devices (such as iPhone, iPod, iPad, tablet and other smartphones) to car and home stereo system | Reliable Quality: With upgraded V5.0 + EDR high-definition audio technology, our wireless Bluetooth aux transmitter receiver can be connected to the device more stably, and intelligent noise reduction can reduce noise to ensure excellent stereo effects. our professional service team will provide you with the best guaranteed support. If you have any concerns about the purchase, please contact us directly. I will provide you with the best after-sales service at any time

Sophisticated Design: The 2-in-1 design is not just a bluetooth receiver or a bluetooth transmitter, it is a dual-purpose transmitter/receiver, making your life smarter. and this 2 in 1 bluetooth audio transmitter receiver can be used for almost all audio system devices with 3.5mm auxiliary jack input/output. The convenient and compact design makes your sound system look smooth and beautiful without taking up your extra space. | USB Powered Easy to USE: Plug and Play, Simply plug it into the 3.5mm aux jack and power it through the USB port, and you're ready to go the perfect wireless audio solution. One-click sliding design, you can easily switch the transmit/receive mode to solve your various usage needs. At the same time, you can easily answer/cancel/end a call/play/pause through the button, making it convenient and fast for you to use. | Superior Performance Design: Equipped with the latest Bluetooth V5.0+EDR chip and high-definition audio technology, our wireless bluetooth audio receiver transmitter can provide 10M more stable and fast connection to the device, and low latency to ensure excellent stereo sound. Automatic reconnection and dual connection, which can automatically connect to the last used device, and pair up to 2 devices at the same time, making music sharing easier. | Super Compatibility: Our bluetooth stereo adapter transmitter is compatible with almost all audio devices on the market. For example: in transmitter mode, you can let your TV, computer, projector and other devices easily transmit audio to bluetooth headphones, bluetooth speakers, etc. In receiver mode, you can connect your music from your Bluetooth-enabled phone tablet device to your speakers, car or home stereo, allowing you to experience wireless music life with ease. | Reliable Quality: The upgraded version of the bluetooth aux receiver adapter has an internal ground loop isolator, eliminating the common ground loop noise problem that plagues most receiver. So you'll no longer hear hiss and hum when you're enjoying your music. At the same time we provide 365 days warranty service. If you have any questions, please feel free to contact us, we will provide you with a fast and enthusiastic solution in the first time.

Enjoy Wireless Music Made Easy: This bluetooth audio receiver adapter provides the perfect solution for your old audio system to have wireless Bluetooth capability. Simply connect the 3.5mm AUX Adapter to your non-Bluetooth car audio system, home stereo, speakers, wired headphones, You can easily enjoy wireless hi-fi stereo music. | Bluetooth V5.0 & Dual Pairing: Built-in Upgraded Bluetooth V5.0+EDR smart chip, stable connection, fast transmission speed; and high-definition low-latency audio decoding technology can bring you high-quality crystal clear audio enjoyment. Connect 2 devices at the same time, so you won't miss a call while listening to music. The max connection range is up to 33 ft. and automatically connect to the last connected device. | Upgraded Dual Noise Cancelling & Hands-Free Calling: Our bluetooth stereo receiver has a built-in high-definition microphone, which has a good sound pickup effect, Equipped with the latest CVC8.0 and DSP dual noise reduction technology, it can eliminate all echoes, and in noisy environments (such as stations or crowds, etc.). It still brings you super clear and true call sound. | Widely Compatible & Easy to Use: This bluetooth car adapter is suitable for most bluetooth devices (such as iphone, samsung, etc. any IOS&Android system mobile phone device). Multiple button design, You can easily answer/redial/hang up/reject call/up/down song and play. and the independently designed voice assistant button allows you to easily activate SIRI and Android phone voice assistants. Let you free your hands and ensure safe driving. | Long USE Time: Our wireless bluetooth AUX receiver has a long battery life and supports fast charging, it only takes 1.5 hours to fully charge and last for 14 hours. In addition, it can be used while charging, which is very convenient. If you encounter any problems during use, please feel free to let us know, we provide lifetime friendly technical support to ensure you have a hassle-free buying experience.