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 the red light stops flashing after pairing succeeds. Connect the product to a device such as a TV with a 3.5 audio cable/ audio cable Click once to get the receiver function; press consecutively, it is the function mode: Pairing name: KN320, find KN320 in the Bluetooth settings of the phone to pair. The blue light flashes during the pairing process, and the blue light stops flashing after the pairing is successful. Connect the product to the audio device with a 3.5 audio cable Technologies: BT5.0, A2DP, AVRCP (receiver mode only) If the device has been in a mode for a long time, it needs to be re-energized to to another mode. Size:32mmx17mmx8.5mm 1x Bluetooth 5.0 Audio /Receiver Adapter Color:As the picture Transmission rate:100 Mbps Receiver mode:Blue light is on 1x User Manual Broad Compatibility: With the included 3.5mm cable, this Receiver adapter can widely be used on your computer, laptop, home stereo system, headphone, smartphone, Mp3 player, player, etc. Receiver mode： wirelessly streams audio from your Bluetooth- phone, tablet, or computer to your wired stereo, speakers, or headphones This extremely portable, lightweight wireless audio & receiver is an ideal wireless audio solution for a wide range of situations and uses Pairing method Working Frequency:2.4 MHz Interface:AUX Operation Range:Up to 10m / 33ft (without any blocking objects) 1x 3.5mm Aux Cable It has got powerful wireless audio streaming capabilities. this & receiver into your backpack or laptop bag and take it without the slightest effort If the device has just switched mode, you want to immediately to another mode, you need to re- once. Type:USB Bluetooth Transmitters Package Includes： Bluetooth version:5.0 Material:ABS mode:Red light is on mode: wireless streams audio from your non-Bluetooth TV, home stereo system, or player to your Bluetooth headphones or speakers Bluetooth version:5.0 mode: Pairing name: KN320, find KN320 in the Bluetooth settings of the phone to pair. The blue light flashes during the pairing process, and the blue light stops flashing after the pairing is successful. Connect the product to the audio device with a 3.5 audio cable Package Includes： Size:32mmx17mmx8.5mm If the device has just switched mode, you want to immediately to another mode, you need to re- once. Receiver mode:Blue light is on This extremely portable, lightweight wireless audio & receiver is an ideal wireless audio solution for a wide range of situations and uses Technologies: BT5.0, A2DP, AVRCP (receiver mode only) 1x User Manual If the device has been in a mode for a long time, it needs to be re-energized to to another mode. 1x Bluetooth 5.0 Audio /Receiver Adapter Working Frequency:2.4 MHz Color:As the picture Receiver mode： wirelessly streams audio from your Bluetooth- phone, tablet, or computer to your wired stereo, speakers, or headphones Operation Range:Up to 10m / 33ft (without any blocking objects) 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 the red light stops flashing after pairing succeeds. Connect the product to a device such as a TV with a 3.5 audio cable/ audio cable Click once to get the receiver function; press consecutively, it is the function Transmission rate:100 Headphone Cable 2 Male to 1 Female Audio Splitter Can C Aux Cord for Android Headphone Jack Replacement Type:USB Bluetooth Phones Cable Auxiliar De Audio Aux Cable Type C to Aux Can C mode: Pairing name: KN320, find KN320 in the Bluetooth settings of the phone to pair. The blue light flashes during the pairing process, and the blue light stops flashing after the pairing is successful. Connect the product to the audio device with a 3.5 audio cable Cable Splitter Android Adapter Audio to Usb Adapter Pixel 3 Type C Adapter Package Includes： compatible with Plug Adapter Headphones Adapter Usb C Headphone Adapter Now And Laters Old compatible with to New compatible with Adapter 1x 3.5mm Aux Cable Usb to Xlr Adapter Headphone Jack Splitter Usb to Phone Jack Adapter compatible with Aux Cord compatible with to Aux mode: wireless streams audio from your non-Bluetooth TV, home stereo system, or player to your Bluetooth headphones or speakers Connector Adapter Analog Pocket Trrs to Trs Adapter to Aux Adapter Adaptador Usb