I really enjoyed the mouse; you ABSOLUTELY don't notice that it's wireless, there are no delays, and it functions flawlessly on all surfaces. Regarding the signal strength: If it's not unusual, it works when I try to control the mouse from the adjacent room via the wall. About the battery: You don't need to turn off the mouse; it does so automatically and resumes operation without any lag, as shown by the LED's brief illumination. I use it in World of Tanks, and I have no issues. Highly suggest purchasing!
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