FAQ of the aircraft: 1. The aircraft fail to connect with transmitter. First, battery fully charged, then power on the drone and the transmitter within 2 seconds. 2. One or more motors don't work. When binding, drone on flat surface, or motor damaged. 3. Accessories missing. Check gift box package inside and outside carefully, or contact custom service. 4. The aircraft is out of balance (can't fly, deviation, spinning on the ground). Check the propellers is installed in the right way. 5. During the charging, battery and charging cable melt. USB charger only for DC computer USB port, never for AC circuit and remember never over-charging.