NEW 40A ESC 2-4S 5V/3A Brushless ESC Electronic Speed Controller For F450 S500 ZD550 RC Helicopter Quadcopter

BEC : 5V/3A

Li-ion/Li0poly:2-4S

Size: about 6.8x2.4cm(ESC with Cable); about 7.2x2.4cm (ESC with banana connector)

Weight:   about 33.2g(with cable); about 32g(with banana connector);