Mi Portable Bluetooth Speaker review: Reasonable choice SECTIONS Share The Mi Portable Bluetooth speaker looks like any other cylindrical wireless speaker. Related Decent sound output Mi Portable Bluetooth speaker is the latest wireless speaker to get added to the Xiaomi audio portfolio. Xiaomi has a reputation for delivering products that are liked by most. Does the speaker fall in the same category? Read on to find out. The Mi Portable Bluetooth speaker looks like any other cylindrical wireless speaker. But Xiaomi has differentiated it from other options with features such as the squared-off design, which gives it a fresh feel compared with the circular design. Also, the speaker is designed to be placed in a horizontal position.