Actually the MX 700 transmits signals at around 125Hz (like a normal corded USB mouse), whereas most wireless mice go at around 50. It's also rechargable, so unless you literally never stop using it, you won't have a problem.
As for signal fluctuations, no review mentions having any problems. Could be that the mouse can use two frequencies, to cut down on conflict.
As for signal fluctuations, no review mentions having any problems. Could be that the mouse can use two frequencies, to cut down on conflict.