I play primarily FPS shooters. Objectively, I go for about 4-10 hour sessions. Battery is mid, maybe 4 hours constant use before needing a plug. Sensor completely stops reading if you pick the mouse up even lightly. THE SCROLL WHEEL HAS NO FEEDBACK, CONSTANTLY HUNG/STUCK BETWEEN CHANNELS, TOO MUCH TRAVEL BETWEEN CHANNELS. I'm constantly having weapon switching problems in game, costing me games/matches WHICH I PAID THIS PRICE TO AVOID. I'd return it if I could, even go as far as smashing it with a sledge-hammer when my new mouse comes in. BEYOND DISAPPOINTED AND THIS COMPANY OWES ME MONEY. DO-NOT-BUY... and yes, I'm writing this right after ANOTHER LOSS DUE TO WEAPON SWITCHING. Thx for wasting my time and money. Return period on items like this should be longer.