Original Flycolor Raptor 390 Series 20A OPTO Brushless ESC Electric Speed Controller with BLHeli firmware for 280 300 Class Multicopter<br><img alt="" src="http://www.guphotos.com/images/uploads/RM5840.jpg"><br><strong>Features:</strong><br>High performance MCU<br>Compatible with various flight-control systems<br>Optimized open-source BLHeli firmware for brushless motor， excellent compatibility<br>Support Oneshot125， the highest throttle signal up to 500Hz， a faster refresh rate<br>Supports 4S battery， rapid beyond the ordinary ESC for racing level players demand for violent play 3D play<br>Throttle signal is twisted pair cable， reduce the crosstalk while the signal transfer by the copper wire and flight more stable<br><br><strong>Specifications:</strong><br>Brand: Flycolor<br>Continous current: 20A<br>Burst current: 30A (10S)<br>BEC: NO<br>Power supply: 2-4s LiPo battey<br>Size: 29 * 12 * 3mm<br>Weight: 10g<br><br><strong>Package Information:</strong><br>Package size: 11 * 10 * 2.5cm / 4.3 * 4 * 1in<br>Package weight: 90g / 3.2oz<br>Adhesive tape package<br><br><strong>Package List:</strong><br>4 * Flycolor 20A ESC<div id="descriptionImg"><img class="lazy" src="http://img.tomtop-cdn.com/product/xy/2000/2000/p/gu1/R/0/RM5840/RM5840-1-b971-NctQ.jpg"><img class="lazy" src="http://img.tomtop-cdn.com/product/xy/2000/2000/p/gu1/R/0/RM5840/RM5840-1-b971-RTaO.jpg"><img class="lazy" src="http://img.tomtop-cdn.com/product/xy/2000/2000/p/gu1/R/0/RM5840/RM5840-1-b971-EAh5.jpg"><img class="lazy" src="http://img.tomtop-cdn.com/product/xy/2000/2000/p/gu1/R/0/RM5840/RM5840-1-b971-MzcN.jpg"><img class="lazy" src="http://img.tomtop-cdn.com/product/xy/2000/2000/p/gu1/R/0/RM5840/RM5840-1-b971-yESU.jpg"><img class="lazy" src="http://img.tomtop-cdn.com/product/xy/2000/2000/p/gu1/R/0/RM5840/RM5840-1-b971-V03s.jpg"><img class="lazy" src="http://img.tomtop-cdn.com/product/xy/2000/2000/p/gu1/R/0/RM5840/RM5840-1-b971-Dh3F.jpg"><img class="lazy" src="http://img.tomtop-cdn.com/product/xy/2000/2000/p/gu1/R/0/RM5840/RM5840-1-b971-7NUp.jpg"><img class="lazy" src="http://img.tomtop-cdn.com/product/xy/2000/2000/p/gu1/R/0/RM5840/RM5840-1-b971-cJha.jpg"></div>