Portable: This extremely lightweight and portable wireless audio transmitter and receiver is an ideal wireless audio solution suitable for various situations and uses.

Transmitter mode: wirelessly transmit audio from a non-Bluetooth TV, home stereo system or CD player to a Bluetooth headset or speaker.

Receiver mode: wirelessly transmit audio from a Bluetooth-enabled mobile phone, tablet or computer to a wired stereo, speaker or headset.

Description:
Name: Audio adapter
Technology: BT5.0, A2DP, AVRCP (only receiver mode)
Operating range: up to 10m / 33ft (without any obstacles)
Pairing name (receiver mode): KN320
Transmitter mode: red LED light is on
Receiver mode: blue LED light is on
Size: 32mm * 17mm * 8.5mm
Features:
1. No built-in battery, powered by DC 5V usb interface:
Plug in the USB power supply, the red light will be on in the transmission mode, and the red light will flash during pairing, and the red light will always be on after the pairing is successful.
Plug in the USB to boot, the receiving mode is blue light, the blue light flashes when pairing, and the blue light stays on after the pairing is successful.
2. Mode switching:
a) First plug the product into the USB port to turn on the power.
b) When the time after power-on is within 10 seconds, you only need to reinsert it to switch the mode.
c) When the time after power-on exceeds 10 seconds, you need to reinsert it twice to switch modes.
Note: This product has been used for more than 10 seconds and will remember this mode. It will be the last mode the next time it is turned on.
3. How to use:
a) Receiving mode: used for home audio, wired headset, car audio, etc. without Bluetooth.
How to use: Turn on the power of the product and confirm the receiving mode (blue light), open the Bluetooth settings in the mobile phone and tablet, search for the pairing name: KN323 for pairing, connect the home audio, headset, car audio and 3.5 audio cable and wait.
b) Transmission mode: use on TV, computer, mp3, etc. without Bluetooth. No driver installation is required, but a 3.5 audio cable is required for connection. It can only transmit audio, but not data.
How to use: Turn on the product and confirm the transmission mode (red light). The product will automatically search for Bluetooth headsets, Bluetooth audio, Bluetooth receivers and other devices next to it.
4. The KN320 is only 32 mm (1.26 inches) wide and weighs only 3.2 grams (0.11 ounces), but it has a powerful wireless audio streaming function. Slide this transmitter and receiver into a backpack or laptop bag, and you can carry it with you effortlessly.
5. Wide compatibility: With the help of the included 3.5mm cable, this receiver transmitter adapter can be widely used in your computer, laptop, home stereo system, headset, smart phone, Mp3 player, CD player, etc.
Packing list:
Audio adapter * 1
3.5mm audio cable * 1
Manual * 1
Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item,please make sure you do not mind before ordering, Thank you!