This Bluetooth receiver adopts the latest Bluetooth 5.4 technology, which optimizes transmission delay and connection defects, reduces sound quality loss, and brings faster, more stable, and smarter connections for enjoying high fidelity music. Equipped with an enhanced microphone and lossless sound, effectively filtering out road noise and ensuring clear hands-free communication. Supports dual device pairing, with a range of up to 32 feet/10 meters, allowing uninterrupted music appreciation. Plug and play, inserted into the 3.5mm AUX jack, powered by USB, automatic car start, integrated storage function seamlessly reconnected with previously paired devices, no battery life concerns. Equipped with a 3.5mm AUX cable, compatible with car stereo systems, wired headphones, home bookshelf speakers, amplifiers, etc., it can also connect to devices such as smartphones, tablets, laptops, etc., enjoying wireless audio convenience anytime, anywhere. Excellent design, high cost performance!