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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