This device allows you to hear the phone music and call not just from car radio，but also from home speaker. Because of its special structure, it also got Red Dot Design award of 2016. Once two parts hooked up and plugged to any USB charging port, its charging will start automatically. Fully charged 2.5 hours, it will provide 20 hours standby time and 5 hours working time. To have a better experience, please read this instruction carefully.
