Features: High Performance MCU Mini size, super lightweight It has optimized firmware specifically for the disc motor and is highly compatible. Firmware is only for multirotors and provides fast response speeds during flight.8 timing settings allow the motor to work in best condition. Support ARRIS exclusive BLheli firmware Oneshot 125. Support throttle signal frequency up to 500Hz, compatible with various flight controllers(≥500Hz throttle signal is non-standard signal)Specifications: Program: BLheli, oneshot 125 Support Continuous Current: 20A Burst Current (10S):30A BEC:5V/1A Lipo Cell:2-4S Weight: 10g Size (excluding plug): 28x15x15x6mm Application (Reference): 330-550 Multirotor Package Includes: 1 x ARRIS Swift 20A 2-4S BLHeli Brushless ESC