Specification Brand QX motorModel 50A 3 4S ESCCont Current 50ABurst Current 10s 65ABEC Mode SwitchBEC Output 5V 5ABEC Output Capability 5 servosBattery Cell 3 4S LiPo not suitable for 2s Weight 43gFeature 1 The ESC has the first class quality and high reliability 2 Strong flow resistance 3 It has multiple protection functions such as input voltage abnormality protection battery low voltage protection overheats protection and throttle signal loss protection 4 It has three start modes normal start soft start and super soft start compatible with fixed wing aircraft and helicopters 5 Accelerator stroke can be set and compatible with various remote controllers It has a smooth and delicate speed control feel and first class speed control linearity 6 The maximum speed can reach 210000 RPM 2 pole motor 70000 RPM 6 pole motor and 35000 RPM 12 pole motor English Manual Click Here Package Included 1 x 50A 3 4S ESC mso bidi font family Times New Roman font size 10 5000pt mso font kerning 1 0000pt mso bidi font family Times New Roman font size 10 5000pt mso font kerning 1 0000pt