Voluminous. No ground connection at the front (but in the back!). The button is a little cheap! 2500 Watts max (against 3500 for other models). Duration: 15min, 30min, 1h, 2h, 4h, 8h ... To stop it we must return to 15mn! Why not add a beach "stop" before the 15 minutes? Once the lights were on but the current does not pass ... by unplugging it and plugging it back everything is back in order.