About this item Lag Free: AptX HD technology helps eliminate lag in Bluetooth audio, delivering the ultimate "no lip sync lag" experience and crystal sound quality. Can ensure perfect sound image synchronization. AptX HD technology allows you to enjoy high-definition audio and Dolby sound for a superior listening experience. WIDE COMPATIBILITY & USER-FRIENDLYCompatible with almost all electronic devices such as TVs, earphones, speakers, mobile phones, etc. Support optical / AUX / RCA audio output. A prominent LCD prompts you to use this device easily and conveniently. The installed volume control knob is available for devices that do not have a built-in volume control. Stable Connection: Conforms to the Bluetooth 5.0 version wireless communication standard, equipped with a top-level Bluetooth chip, providing a stable and reliable connection transmission distance of up to 32 feet (10 meters). With a special circuit and a finely tuned antenna, it won't cause interference even if it works on a wall. It will automatically enter pairing mode when used for the second time. Receive Mode: Designed for car audio/speakers/headphones/old speakers and most mobile devices with 3.5mm aux port, turning old stereo speakers into beautiful bluetooth speakers. Stream audio from iPhone or iPad to non-Bluetooth headphones/speakers/home speaker system. In RX mode, insert the TF card to play the content of the TF card directly, then short press the button (-/+) to select the previous/next track. TX mode: In TX mode, it is suitable for devices with audio output function (TV, PC, CD, DVD player and Kindle, etc.). ), you can enjoy high-quality music or listen to late-night shows through Bluetooth headphones without disturbing others. Mounting Type: Desktop Mounting Mounting Type: Plug-in Latency Free: AptX HD technology helps eliminate lag in Bluetooth audio, providing the ultimate "no lip sync lag" experience and crystal sound quality. Can ensure perfect sound image synchronization. AptX HD technology allows you to enjoy high-definition audio and Dolby sound for a superior listening experience. WIDE COMPATIBILITY & USER-FRIENDLYCompatible with almost all electronic devices such as TVs, earphones, speakers, mobile phones, etc. Support optical / AUX / RCA audio output. A prominent LCD prompts you to use this device easily and conveniently. The installed volume control knob is available for devices that do not have a built-in volume control. Stable Connection: Compliant with the Bluetooth 5.0 version wireless communication standard, equipped with a top-level Bluetooth chip, providing a stable and reliable connection transmission distance of up to 32 feet (10 meters). With a special circuit and a finely tuned antenna, it won't cause interference even if it works on a wall. It will automatically enter pairing mode when used for the second time. Receiving Mode: Designed for car audio/speakers/headphones/old speakers and most mobile devices with 3.5mm aux port, turning old stereo speakers into beautiful bluetooth speakers. Stream audio from iPhone or iPad to non-Bluetooth headphones/speakers/home speaker system. In RX mode, insert the TF card to play the content of the TF card directly, then short press the button (-/+) to select the previous/next track. TX Mode: In TX mode, it is suitable for devices with audio output function (TV, PC, CD, DVD player and Kindle, etc.). ), you can enjoy high-quality music or listen to late-night shows through Bluetooth headphones without disturbing others. Installation type: desktop installation Installation type: plug-in