Skeptical at first share of the small size of the device and its light weight, the result is stunning. Its clear, no sizzle, allows sound to a room (as a class) at normal volume obviously do not expect either to organize an evening course. Only small problem, a lack of low frequency ... but is it possible on so-small device? The unit's small size allows it to store anywhere, Bluetooth works fine and autonomy is as advertised. In short, my partner will use that class as it passes videos on her laptop and she is delighted.