KN330 3 in 1 USB Bluetooth 5.0 Adapter Audio Transmitter Receiver with Switch Button & 3.5mm AUX Interface

Features: 1. It can help home speakers wired earphones car speakers etc. do not have Bluetooth to connect with your mobile phone via Bluetooth 2. When using it on a computer there is no need for an audio cable no driver plug and play (only audio cannot transmit data) 3. With a switch you can switch between transmitting mode and receiving mode at any time both modes are two-channel stereo 4. The 3.5mm AUX interface needs to be connected to an audio cable to play music 5. Built-in microphone support Bluetooth hands-free call 6. No built-in battery powered by USB DC 5V interface support multiple power supply methods 7. Bluetooth 5.0 technology fast transmission speed 8. Small size easy to carry Product specifications: 1. Bluetooth version: Bluetooth 5.0 2. Operating range: up to 10m (under no obstructing objects) 3. Pairing name: KN330 (in receiving mode) 4. TX mode: Transmitter mode the red LED light is on 5. RX mode: receiver mode the blue LED light is on 6. Product siz