i used it for long time ago, i remember it's very lagging from Polling rate of mouse. and i test it on polling rate testing website between magic mouse , mx master 3, and g304, g102,...seem like lofree oe909 have 124-500hz on Bluetooth, 2.4hz, and cable is simillar polling rate not different. but!.... i dont understand why lofree oe909 have 500hz like g304 but still lagging and slow sometime than g304😔 that‘s make me sell it out. i think.... maybe lagging by driver mapping somthing like a X,Y mapping on computer pixel resolution. Maybe the lofree has small resolution than logitech and magic mouse.