Feature: 1. Solve problem that computer does not have Bluetooth, achieve bluetooth wireless audio transmission, no interference to WIFI signal. 2. Automatic memory function, after first pairing successful, automatic connecting and pairing later. 3. Smart bluetooth 5.0 more stable, built‑in antenna designed, can achieve 0‑10 meters long distance transmission. 4. Miniature size, extremely compact USB adapter, can left on laptop or PC, without being unloaded, saves space by not blocking nearby USB ports. 5. Made of high quality ABS material, sturdy, durable and long service life. Specification: Condition: 100% Brand New Item Type: USB Bluetooth Adapter Bluetooth Version：5.0 Material: ABS Color: Black Transmission Power：2.4（Mbps） Transmission Distance: Maximum Support 10M Quantity: 4PCS Bluetooth 5.0 Audio Transmitter Mainly Used for Windows System Desktop Computers/Laptops, Supporting Part for Android Intelligent TV Audio Transmission, Audio Connection with Bluetooth Headset, Bluetooth Sound No Support for Connecting to Devices Such As Smartphones/Bluetooth Keyboards Mouse. No Support for IOS System Weight: Approx. 45g. Package List: 4 x USB Bluetooth Adapter