The portable Marshall Tufton speaker delivers strong Bluetooth audio performance from a tough, stylish build. Up top, the control panel houses three knobs. One acts as the power/volume control, and two are for adjusting bass and treble. There's also a dedicated Bluetooth pairing button, which also acts as the source button for switching between paired devices and the aux input. To the right of the knobs, there's a red LED indicator for battery life. There are no playback or track navigation buttons.