[Black One Size]

If the device has been in a mode for a long time, it needs to be re-energized to switch to another mode.
Transmitter mode: wireless streams audio from your non-Bluetooth TV, home stereo system, or player to your Bluetooth headphones or speakers
It has got powerful wireless audio streaming capabilities. Slip this transmitter & 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 switch to another mode, you only need to re- once.
Working Frequency:2.4 MHz
1x User Manual
Type:USB Bluetooth Transmitters
Receiver mode： wirelessly streams audio from your Bluetooth- phone, tablet, or computer to your wired stereo, speakers, or headphones
Material:ABS
Size:32mmx17mmx8.5mm
Interface:AUX
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
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 transmitter function
Bluetooth version:5.0
Transmitter mode:Red LED light is on
Technologies: BT5.0, A2DP, AVRCP (receiver mode only)
Package Includes：
Transmission rate:100 Mbps
This extremely portable, lightweight wireless audio transmitter & receiver is an ideal wireless audio solution for a wide range of situations and uses
Color:As the picture
Operation Range:Up to 10m / 33ft (without any blocking