Highest efficiency 100% N-FET design.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: 30AMax. current: 35AInput Voltage: 2-4S lipo / 4-12 cell Ni-MH/Ni-CdBEC: 5V 2A (Linear mode)Size: 55x26x8mm(length 145mm including power cable) Weight: ~22gPackage Included: 6 esc