The exclusive SpektrumAvianSmart ESC provides a variety of real-time power system related telemetry data including motor RPM, current, battery voltage and more via compatible receivers (including the AR637TA) and Spektrum AirWareequipped transmitters (including the DX6e and 8e, DX6 G2/G3 and 8 G2, the DX9, iX12, iX20 and others) while you fly.