In the Drone category we show a comparative table between One (from Fathom) and X4 Air FPV (H501S) (from Hubsan). The second product turns out to reach a maximum speed higher than that of the first product. The first product has a maximum time of autonomy greater than that of the second. X4 Air FPV (H501S) is cheaper than One. The first product appears to be heavier than the second. We provide here a summary designed for quick reading between One and X4 Air FPV (H501S). Published data is always indicative and may contain errors or be subject to change. Always check official sources.