1..With gyroscope,fly stable,anti-shock 2.Omnibearing flying direction 3. intelligent control system 4.operation safe 1. Function: ... time: 40 mins for helicopter,60 mins for transmitter by USB 4. Flying time: above 7 mins for helicopter,120 mins for transmitter5 ... .5(CM)CTN :49*36*72(CM)QTY/CTN: 24PCS remote control helicopter