ELEGIANT Mini Speaker Colorful Music Angel For Micro SD/TF USB MP3 MP4 Ipod Blue Weight: 150g Dimension: 50 x 50 x 49(L*W*H Color: Black,Green,Rosy,Silver(as pictures shown) Speaker:1.77 inch(diameter 45mm)magnetically shielded, 4 ohm Save/Download:USB data cable download, no external card reader