Spider PRO Premium 20A OPTO 2-4S ESC is specially designed to meeting the demand of ever popular multi-rotors, With better quality and competitive price, spider will be your best choice for your multirotors.<br><br><br>Features:<br>Extremely low internal resistance.<br>Capable of using BLHELI firmware.<br>Super smooth and accurate throttle response.<br>Specifically designed for FPV Racing multi-rotor use.<br>Capable of one shot 125 feature to work better with your flight controllers.<br>Supports high RPM motors, can be matched with most of the motors in the market.<br>Use new generation of the MOSFETs to make sure the ESC with low heating and more reliability.<br><br>Specifications:<br>Brand: ZTW<br>Item name: Electronic Speed Control<br>Model: Spider 20A PRO Premium<br>Continous output: 20A<br>Burst output: 30A<br>Max. power: 400W<br>Battery: 2-4S LiPo battery<br>Suit for F450 F550 RC Muticopter<br>length: 27mm<br>Width: 14mm<br>Weight: 10g<br><br>There may be some deviation due to manual measurement.<br><br>Package information:<br>Package size: 12.6 * 7.5 * 2cm / 4.96 * 2.95 * 0.78in<br>Package weight: 23g / 0.83oz<br>Poly bag package<br><br>Package List:<br>1 * ZTW Spider PRO Premium 20A OPTO 2-4S ESC<br>1 * User Manual