Armattan SimonK 12A ESC - Brushless Motor Electronic Speed Controller for Multi-Rotors Armattan custom made 12A ESC, factory flashed with SimonK firmware for Multirotors Rated at 12A continuous, and 18A burst for 30 seconds - lots of headroom! Capable of running 2-4S Lithium batteries Onboard BEC provides up to 2A at 5V Only 12g each including wiring