With the Xy -4 V2 4 inch drone you unfortunately leave the receiver at the rear on the cable, although here above the 411 flight controller the same structure, the same camera housing as the small 2.5 inch QWinOut drone of the 100 series. But next to the built-in video transmitter in the Xy -4 V2, there is no room for the receiver above the FC. And flat-head hexagonal screws in the bottom plate would reduce the risk of battery damage if you tighten the strap firmly or in a hard landing. I set about retooling the drone.