Incomparable! The \"SRB Quark\" allows all types of flight for beginners or for confirmed pilot inside or outside by low wind. Assembly and tested in the factory, without danger thanks to foam blades. Different settings can be made directly on the helicopter depending on the pilot\'s capacities. Easy and economical maintenance. Autonomy greater than 10 minutes with the original li-po battery.\nDelivered without transmitter. Works with most FM 4 -way transmitters from major radio control brands.