Hobbywing X-Rotor 2-6S Lipo 40A Brushless Motor esc For RC FPV QuadcopterThese are 100% original hobbywing xrotor esc. These esc are available in both long wire and short both pictures uploaded you can confirm us if u have special requirements. Brand:HobbywingModel Number:XRotor-40ACont.Current:40ABurst Current(10sec):60ABEC:NoneLipo:2-6SProgramming:Timing(high/middle)Weight:26gSize:68x25x8.7mmPlug:Φ3.5mmx3Usage:RC Multintegrated circuitopterAPAC means Asia-Pacifintegrated circuit Version,the offintegrated circuitial ESC sold in Asia-Pacifintegrated circuit areas. Features:- Using Multintegrated circuitopter special program, fast throttle response,surpasses all kinds of open source software;- Firmware was optimized specifintegrated circuitally for disc motor, and it has a very good compatibility;- Highly intelligent, strong adaptive capacity, reserve the timing setting item (height/middle timing), easy to use;- Throttle signal line is twisted wire to reduce crosstalk within the transmission signal generated by the copper, so that more stable flight;- Supports refresh rates up to 621Hz throttle signal, compatible with various flight controllers. (Note: the throttle signal over 500Hz are all non-standard throttle signal);- Using MOSFET special driver integrated circuit, its performance and stability far surpass the driving circuit with discrete components built;- Ultra-low resistance MOSFET, strong flow capacity.