Have unforgettable music experience. 4D bluetooth speakers are portable speakers, adhere to great sound quality and performance. With superb features - Bluetooth version 2.1, FM Radio Function, High sensitivity Radio, Clear Sound, Micro SD Card Supported, Pendrive Supported, Audio Player, MP3, MP4, IPOD, IPhone, Computer, Mobile Phone, CD/DVD,In-line mic, support phone call function, conference calls via bluetooth phone. This product is plugged in SD Card/URetro discal can play stored music files and music formats MP3, WMA, WAV. Excellent product portable to be enjoyed anywhere anytime and can be easily carried.