Features 1、Auto Learning: This RC boat 100A ESC will automatically learn the throttle pos, and power off on signal error. 2、Reversing Function: This RC boat brushless ESC supports reversing function and half slope start, providing more flexible control. 3、Reliable Protection: This RC boat brushless ESC will alarm and turn off the output when the receiver has no signal. 4、High Reliability: This ESC speed controller prohibits the RC boat from starting when the throttle position is wrong. 5、For RC Boat: This RC boat 100A brushless ESC is suitable for RC boat and underwater propeller. Item Type: RC Boat 100A ESC Material: Electronic Components Color: Black Continuous Current: 100A Bce Output: 5V/5A Operating Voltage: 7.4 to 22.2V Battery: 2 to 6S Lipo (Battery Not Included) Application: RC Remote Control Boat, Underwater Propeller, Etc Product Size: Approx. 79 x 39mm / 3.11 x 1.54in ( Manual Measurement, Slight Error May Exist ) Package List 1 x RC Boat 100A ESC