... 1) Small cute mini speaker 2) USB interface and 3.55 DC-5V 3) Play mp3 of the TF card 4 ... ΩMaximum SPL:28Appearance Material:Aluminum alloyN.W90gProduct size55*50*50mmG.W 128gPackage size 81*51*51Colorblue, black, red, green, silverAccessoriesCharging cable ...