★40A 2-4S Brushless ESC,BEC output: 5V 3A
.★The applicable number of battery cells :2-4S.
★Use for F450 450mm S500 ZD550 RC Helicopter Quadcopter.
★Highly intelligent, adaptive ability, extremely easy to use.
 
BEC : 5V/3A
Li-ion/Li0poly:2-4S
Size: about 6.8x2.4cm(ESC with Cable)
Weight:   about 33.2g(with cable)