While the dual head provides the advantage of time, there are basic disadvantages that essentially make this device useless:
1) The very poor design of the squeezer, which is only suitable for large oranges (lack of a smaller head)
2) The even worse design of the lid, which is essentially the big problem as it presses the fruit unevenly. Without a lid, you cannot operate it safely as it spins very fast and pieces and liquids are also scattered everywhere. Of course, even with the lid closed, there is a small leakage.
3) Very powerful motor that reaches the peel very quickly and squeezes it, resulting in a bitter juice.