GRWIBEOU USB 3 In 1 Bluetooth 5.0 AdapterAudio Receiver Transmitter 3.5mm AUX Stereo Adapter For TV PC Computer Car Acceories1. Description:(1). The extremely portable and lightweight wirele audio transmitter/receiver adapter is an ideal wirele audiosolution for a wide range of situations and uses.(2). 3-In-1 Mode(1.1). Transmitter Mode (TX): Wirelely transfer audio from your non-Bluetooth TV, home stereo system, or CD player to your Bluetooth headphones or speakers.(1.2). PC Audio Transmitter Mode: Wirelely transfer audio from the PC to Bluetooth headset or speaker through USB port, no audio cable is required.(1.3). Receiver Mode (RX): Wirelely transfer audio from your Bluetooth-enabled phone, tablet, or computer toyour wired stereo, speakers, or headphones.(1.4). Mode Switching(1.5). Switch the mode by toggling the TX/RX switch.(3). Pairing Method(1.1). TX Mode: TX mode will automatically search for other Bluetooth receiving devices (such as Bluetooth headset,Bluetooth speaker, Bluetooth receiver, etc.). The red light flashes during pairing, and stops flashing after pairing succeful. Connect the product to a device such as aTV with a 3.5 audio cable/RCA audio cable.(1.2). TX Mode on PC: Insert USB into the computer's USB port, it will automatically search for other Bluetooth receiving devices (such as Bluetooth headset, Bluetoothspeaker, Bluetooth receiver, etc.). The red light flashes during pairing, and always on after pairing succeful.(1.3). RX Mode: (Pairing name: SY319) Find 'SY319' in the Bluetooth settings of the phone you want to pair. The blue light flashes during the pairing, and stops flashing after the pairing succeful. Connect the product to the audio device with a 3.5 audio cable.(4). Ultra-Portable Audio Streaming Power Supply(1.1). The "SY319 " is compact but has powerful wirele audio streaming apabili Put this tasmitr/receiver Ultra-Portable Audio Streaming Power Supply The 'SY319 ' is compact but has powerful wireleaudio streaming capabilities. Put this transmitter/receiverin your backpack or laptop bag and take it on-the-go.(1.2). Broad Compatibility With the included 3.5mm cable, this transmitter/receiveradapter can be widely used in your computer, laptop,home stereo system, headphone, smart phones, Mp3player, CD player, etc.2. Specifications(1). Bluetooth Version: Bluetooth V5.0+EDR(2). Bluetooth Profiles: A2DP/AVRCP(receiver mode only)(3). Operation Range: Up to 10m (without any blockingobjects)(4). Pairing Name(Receiver mode ): SY319(5). Transmitter Mode: Red LED light is on(6). Receiver Mode: Blue LED light is on3. Package Including(1). 1x Bluetooth 5.0 Audio Transmitter Receiver(2). 1x 3.5mm Aux Cable(3). 1x User Manual