Feature: Bluetooth version: Bluetooth V5.3 Supported protocols: A2DP, AVRCP, AFH, HFP, HSP Input interface: USB (free drive), AUX audio Bluetooth distance: 30M (unobstructed place) No Driver Installation Needed aptX Low Latency Certified Codec method: CODEC aptX Adaptive/aptX HD/aptX LL/aptX/SBC Dual link: Connect two Bluetooth speakers or headphones at the same time Bluetooth USB Adapter-Compatible with PC, Mac, PS4/PS5,Switch,TV. Enable audio streaming to speakers or headphones and not interfere with others watching your favorite streaming. Different from the market Bluetooth adapter, not for mouse, keyboards or game controllers. Only for Audio device. APTX Bluetooth Adapter-Having your audio out-of-sync with your game or video is really frustrating. This Bluetooth audio adapter is equipped with a new Qualcomm QCC3056 chip, support APTX-adaptive mode, Lag is reduced to le than 40ms, 5x shorter than standard Bluetooth, which can adjust sound quality and delay adaptively, providing smooth performance.Now you can enjoy gaming or watching a movie with real-time audio synchronization Plug & Play, Connect Instantly-No need to install any driver software. The PS5 Bluetooth adapter not only eliminates the trouble of installing drivers, but also saves time and completes configuration safely and efficiently. Just insert and enjoy the wirele stream audio. Dual Link-Not only for audio streaming, but also ideal for conference calls. Such as Skype, Zoom, Teams. Dual link audio Bluetooth transmitter can connect 2 Bluetooth headphones at the same time, you can share and enjoy music/movie together with your friend. Bluetooth 5.3 Audio Streaming-With advanced Bluetooth 5.3 technology, backward compatible with Bluetooth 5.1/5.0/4.2/4.0/3.0. External Antenna-Featuring external antenna, the audio transmiion distance can cover up to 30m in open areas. You can easily continue talking or listening to music when leaving the computer screen, no longer troubled by the limitation of short distances, and enjoy the greatest freedom at home. Q1: Why Bluetooth audio adapter LE502 is not recognized as a BT device by my PC? A1: This Bluetooth adapter is specifically only for audio-based Bluetooth devices instead of a Bluetooth device. It can not be recognized as a Bluetooth device. Q2: How to connect the Bluetooth headset? A2: For Windows 10 PC, Please go: Settings>Audio Devices>Input Device, please choose "USB headset (LE502)" Output Device. Q3: What if the sound quality is dull and muffled when you use headphones to listen to music? A3: The Bluetooth audio adapter is in "Handsfree/Call mode".(the LED indicator flashes Blue quickly). Simply turn off the LE502's microphone input in the computer's audio settings, and the Bluetooth connection will switch to "A2DP mode" for high-resolution sound quality. Settings path: Settings>Audio devices>Input devices>Disable headset microphone (LE502)