Hobbypower HP SimonK 30A ESC Brushless Speed Controller 2-4S for Hexacopter F550 FY650(Pack of 6 pcs)

Universal SimonK 30A brushless ESC
Highest efficiency 100% N-FET design.
Highest accuracy with Crystal Oscillator (Temperature won't affect the PWM operating range like other cheap ESC's).
No low voltage cutoff, because any cutoff in a multirotor = crash.
No over temp cutoff, because any cutoff in a multirotor = crash.
Super high refresh rate, no buffering of the input signal, resulting in more than 490Hz response rate.
16KHz motor frequency, giving fastest response of the motor, and quietest operation as well (no 8KHz squeal).
Super simple, foolproof operation! Nothing to program other than the throttle range.

ESC Specs:
Cont. current: 30A
Max. current: 35A
Input Voltage: 2-4S lipo / 4-12 cell Ni-MH/Ni-Cd
BEC: 5V 2A (Linear modeï‰
Size: 55x26x8mm
Weight: ~25g

Package includes:
6pcs Hobbypower Simonk 30A ESC