Equipped with high-speed, small-sized, multifunctional MCU.Full protection feature including low-voltage protection, over-heat protection, signal lost protection, safe on protection, and -check functions. 4 seconds very soft performance which is very suitable for helicopters. startup performance, great throttle linear and quick throttle response, low-speed performance. Max speed: 240,000 RPM (2 poles), 80,000 RPM (6 poles), 40,000 RPM (12 poles).Individual circuit for MCU and BEC to anti-interference capability. The parameters of ESC can be configured via program card or transmitter.-in linear BEC or switch mode BEC. The low-voltage and -up can be programmed quantized and precisely by program card.Throttle range can be configured to be with different receivers.Three throttle curve make helicopter control more flexible.Motor reverse available. Specification: Input voltage: 3V -9V (support 1-2 lithium batteries) Continue current: 7A current: 9A (within 10 seconds) BEC output: 1A/5V (linear) Program Function: YES Colour:Red + white Material:PCB Size:22x12x5 mm Package Contents: 1 * ESC Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.