Features:BLHeli-S, better startup than BLHeliSupport flight control like Naze, CC3D, Kiss, F3 and F4MCU-EFM8BB21F16 and hardware PWM make smooth throttle responseESC power and signal solder pads, battery connections pads, loud buzzer, bright LEDsAdd 2 BEC, 12V 5VFlight controller mounting hardware includedLC Filter to provide smooth DC voltage to FPV cameraFPV camera and video transmitter connection pads (battery voltage)Can install OSD directly, have OSD solder points on PDBNylon cable tie bundle strapsSuit for QAV 250 ZMR 250 quadcopterESC