2Pcs Favourite Little Bee 20A Brushless OPTO ESC Electronic Speed Controller for QAV250 DJI F330 RC Quadcopter.<br><br>Features:<br>Can be programmed by program card or transmitter<br>Based on BLHELI firmware, further optimized to the perfect flying performance<br>Max speed: 210,000 RPM for 2 pole, 70,000RPM for 6 pole, 35,000 RPM for 12 Pole<br>Seperate power supply for MCU and BEC, enhancing the ability of eliminating magnetic interference<br><br>Specifications:<br>Constant current: 20A<br>Burst current: 25A @ 10s<br>Input voltage: 2-4S LiPo battery<br>Suit for: QAV250 DJI F330<br>Item size: 25 * 13 * 4mm<br>Item weight: 9g<br><br>Package Information:<br>Package size: 9 * 7 * 0.5cm / 3.5 * 2.8 * 0.2in<br>Package weight: 18g / 0.6oz<br>Adhesive tape package<br><br>Package List:<br>2 * Favourite 20A ESC