RADIOOO means RADIO plus infinite. It uses a custom 8W full-range speaker, and the operating voltage also rises from 3.7V of the first-generation to 7.4V. It has the functions of a Bluetooth speaker and an FM radio, and can realize the expansive function of multi-channel, wifi speaker, intelligent voice speaker and connecting subwoofer through "Cat Key". It has kinds of styles according to user’s preference. It consists of a standardized kernel and shell accessories with various styles. Each style is very representative and classical as well. Heavy and small, it is so attractive.