???Motor description:
Using high quality bearings， magnets and imported silicon steel sheet， thus ensure the service life
of motor and performance.
100% of dynamic balance calibration， minimize vibration that caused by the loss of energy.
Each motor was tested through 63 quality inspection， ensure the motors being reliable.
Motor specification:

Voltage(V)	Prop.	Current(A)	Thrust(G)	Power(W)	Efficiency(G/W)	RPM
12	APC 11 * 4.7	12	830	144	5.8	5720
8	APC 11 * 4.7	7.3	500	58.4	8.6	4650

Simonk 20A ESC specification:
Continuous current: 20A
Peak current(10S): 25A
Lipo battery: 2-3 cells
BEC: 2A/5V
Programmable
Package size: 13 * 8 * 4 / 5.1 * 3.1 * 1.6in
Package weight: 108g / 3.8oz

Package list:
1 * EMAX XA2212 820KV brushless motor
1 * Simonk 20A ESC
1 * prop adapter
1 * installation board
3 * banana plug
4 * screw with accessories
3 * shrink tube