Walkera Scout X4 GPS RC Quadcopter With Devo F12E For Gopro 3 FPV2. Waypoint mission planning/designated flight. Follow me mode/Follow record track back to home. Real time telemetry monitoring. Ipad holder with back-up power. Multi-purpose plane,can change from 4 motors into 8 motors. Flight time up to 25 minutes. GPS position hold. Hyper IOC function. Object round flight. One key to start/one key to go home/failsafe return to home. So buy this Walkera Scout X4 GPS RC Quadcopter With Devo F12E For Gopro 3 FPV2 Now $2014.99.