E-flite UMX Spacewalker BNF Airplane Need to Complete - 4+ channel DSM2 or DSMX compatible transmitter Includes Ultra-micro 70mAh 1S 3.7V Li-Po flight battery and DC charger 6.0mm brushed motor with gear drive and 100mm propeller Spektrum DSMX receiver/ESC/Servo unit, installed Spektrum DSMX receiver/ESC/Servo unit, installed