4pcs/lot Brushless 40A ESC Speed Controler 2-4S with 5V 3A UBEC for RC FPV Quadcopter RC Airplanes Helicopter ( Color : Long Wire )

1 Output capacity: continuous current 40A, short-time current 55A (not less than 10 seconds);2 power input: 2-4 lithium battery3 BEC output: 5V@3A (linear regulator mode - linear mode);4 Maximum speed: 210,000 rpm for 2-pole motor, 7000 rpm for 6-pole motor and 35,000 rpm for 12-pole motor;5 Dimensions: 68mm (length) * 25mm (width) * 8mm (height);6 weight: 30g;