Feature: *Ready to fly out of the bag, but users can tap into serious computing capabilities by connecting them to Castle Link software using a Castle Link or upcoming Field Link programming card. *Comprehensive heli feature set, including direct entry governor mode, autorotation with bailout, and soft start capabilities to protect your gearing (see the screenshot on the right for more details). *Opto isolated throttle cable helps reduce radio interference. *Full data logging capabilities. Measure amp draw, controller temperature, motor rpms, battery voltage and ripple and more. Take the mystery out of electric flight. Surge current:80Amps *Supporting motor types:2 poles to 10+poles in/outrunner brushless motors *Max Supporting input voltage:50v(12s Li-Po/36 cells Nicad/NiMH) *Size:71.12X33X22.9mm *Weight:107.7g(With wires) NOTE: Not including BEC. User need to provide the power for receiver and servo.