Small effect, like "derby" with more beams, but less power.
Possibility to choose the colors individually DMX (with controller), or in auto mode 2 (without DMX controller) musical mode with microphone sensitive enough

It does not have the power or make the same impact that a real derby, however I find it very good for the price (that price must not ask too much) it is compact, covers a wide angle, microphone sensitivity allows its use even at home (with a simple stereo, without the scream!) just fine for small private parties, and low power consumption will not be a problem (even on car battery + inverter! )

We can just miss a little light engineering, a rather noisy fan (and my copy, dirty lens on the inside as he had not yet turned ... probably fingerprints left by the Chinese who mounted!)