Tech-Protect Ultraboost is a practical accessory that enables wireless audio transmission from devices such as smartphones/tablets to devices lacking Bluetooth functionality but equipped with an AUX port, such as car radios or speakers. Charged via a USB-A port, it allows easy connection to various power sources - car/home chargers - making it versatile for use both at home and on the go. Ultraboost also serves as a wireless hands-free kit; its built-in microphone and noise reduction feature ensure disturbance-free conversations. The adapter guarantees high-quality, crystal-clear audio transmission.