fpv quadcopter
http://reidgvkq206.postbit.com/how-to-explain-betafpv-85x-fpv-whoop-quadcopter-to-your-boss.html
BETAFPV 85X FPV Whoop Quadcopter 4S with Inbuilt FrSky XM+ Receiver. The 85X FPV is a powerful quadcopter which packs in a powerful motor and is ideal for racing. The 1105 5000KV motor is powerful and supports