Feature: 1. For Main Program: The multi rotor controller is dedicated to the main program to meet various functional requirements of multi rotor. 2. High Compatibility: The software is specially optimized and compatible with disc engine. Compatible with lithium and nickel metal hydride batteries. 3. Stable Flight: The throttle signal line adopts twisted pair design to effectively reduce the crosstalk generated in signal transmission and make the flight more stable. 4. Stable Performance: Professional manufacturing, craftsmanship and high accuracy help to provide stable performance to meet your various needs. 5. Update and Upgrade: It can be used to upgrade and replace old or damage parts, and you can experience the fun of maintenance. Specification: Item Type: RC 20A Brushless ESC Material: Electronic Components, Rubber Weight: Approx. 34g / 1.2oz Product Type: RC Accessories Product color: Black Continuous Current: 20A Instantaneous Current: 25A BEC Type: Linear Regulator BEC Output: 5V 2A Number of Batteries: 2-3 Lithium Batteries, 5-9 Nickel Metal Hydride Battery Applicable to: Model Aircraft. Package List: 1 x RC 20A Brushless ESC1 x Manual2 x Accessory Note: In order to make the electric adjustment adapt to the throttle stroke of your remote control, the throttle stroke should be reset when using this electric adjustment for the first time or replacing other remote controls.