The Nine Eagles Solo Pro V1 260A micro helicopter is great for beginners to fly indoors. The rotating head structure, hollow cup main and tail motor makes this heli steady, flexible and quiet in flight. This also makes maintenance easy. The five in one 2.4Ghz digital controller has a strong, stable signal and allows multiple helis to be flown at one time without interference. As with other Nine Eagles models the transmitter for the Solo Pro 228P can be easily changed from mode 1 to mode 2 and vice versa.