Feature: 1. Support Function: The 125A brushless esc supports reverse function and supports half slope start. 2. Throttle: Throttle position error prohibits starting, automatically learns the throttle stroke. 3. Error Signal Power Off: Error signal power off, the receiver has no signal to alarm and close the output. 4. Premium Materials: Made of premium electronic components, strong, durable and not easy to damage. 5. Applicable Scene: Suitable for RC boats, underwater thrusters, etc., with excellent performance. Specification: Item Type: Brushless ESC Material: Electronic Component Colour: Black Product Size: Approx. 79 x 39mm / 3.1 x 1.5in Continuous Current: 125A Bce Output: 5v 5a Use Voltage: 7.4-22.2v Support Battery (not Included): 2-6s Lipo Applicable: RC Boat, Underwater Thruster, Etc.. Package List: 1 x Brushless ESC Note: 1. This device is designed with battery power supply and cannot use other types of power sources. Using other power sources may damage the device or the power source.2. This equipment is a remote control model product and cannot be used on a manned system to prevent accidents.3. This equipment is a high power electronic product, which will generate a lot of heat during operation.Please take care to maintain forced wind cooling conditions4. The equipment is equipped with a power supply voltage detection system. When connected to the battery,Please use the shortest possible connecting wire and make sure the battery has enough current.In order to avoid malfunction of the voltage system and affect the use.5. This equipment is not allowed to drive two or more motors at the same time