... all models, iphone 3G, 3 GS, iphone 4 .2. Can support MP3, MP4, CD, the computer, all mobile phone, through the ... audio line played music.3. Built-in Lithium battery can support 4 AAA batteries power supply, easy to carry, a remote ... , wall, stone and so on, and make hard surface send out the music.(You put it in different material, and by ...