Specification: Kv (rpm/v): 880 Power(W): 285 Wire winds: 10 Resistance(mΩ): 107 Idle current(A): 0.8 ESC(A): 20 Cells Ni-Cd / Ni-MH: 6-12 Cells Li-PO: 2-4 Prop: 11*8.5 / 10*7 / 12*6 Weight: 67g