Bluetooth 5.1 Audio Receiver:Outfitted with a Bluetooth 5.1 chip, this receiver ensures that any Bluetooth-enabled device, such as smartphones, tablets, desktops, and laptops, may stream high-fidelity audio wirelessly to any home stereo system or speakers.Only works with a Bluetooth receiver. With AUX Interface: connect to the AUX interface of old-fashioned speakers or power amplifiers to solve the problem that the speaker has no Bluetooth and cannot use Bluetooth to play. You can install a bluetooth in the car, listen to music/navigate correctly,and drive safer and AUX connection is more stable. Supports TF Card Playback:Allows users to connect a TF Card up to to this Bluetooth adapter and pick whether to play from your smart device or from the TF card.driver-free plug and play, no delay in transmission. Lossless Sound Quality: high-quality Bluetooth decoding chip, lossless transmission. Live theater sound effects, better sound quality and zero delay in listening to songs. Let you enjoy high-definition audio sound for a great listening experience. Wide Compatibility: Compatible with almost all electronic devices on the market, such as TVs, headphones, speakers, and mobile phones. Support Optical audio output. Built-in signal gain amplifier, room connection without dead ends. 10 meters transmissionsound quality without delay, signal stability without lag. Ferture: 1.Bluetooth 5.1 audio receiver Smart bluetooth chip, equipped with the new version of bluetooth 5.1, more stable transmission, stronger signal, no pressure on bluetooth transmit/receive. 2. Support TF card playback Driver-free plug-and-play Insert TF card to play, driver-free plug-and-play, no delay in transmission. 3. Rich interface, convenient button Multi-interface options meet the needs of various equipment, and the button design is simple and convenient to operate. 4. Bottom anti-skid design The soft silicone pad is designed to prevent falling and scratches. The base is equipped with a silicone pad that is non-slip and does not fall. Note:Do not place it on high temperature or oily equipment. Specification: Bluetooth version: 5.1 Material: ABS Interface: USB, 3.5mm, optical fiber Effective range: 10 meters Package contains: 1pcs*Wireless Audio Receivers & Adapters