If you're not into fast action games, then this is the best mouse on the market.Great mouse I recently installed this Logitech Wireless Optical Mouseman and both installation and operation have been without problem.
How long will the battery last? I have measured the average battery current and observed the mouse exhibits three modes of operation, Active Mode (mouse is in motion), Slumber Mode(mouse motion has just ceased) and Sleep Mode (mouse enters Sleep Mode after 65 seconds of Slumber). If mouse is moved or any button is pressed the mouse will immediately enter Active Mode followed by Slumber Mode if there is no motion of the mouse.
In Active Mode the mouse current is approximately 30 milliamperes. In Slumber Mode the mouse current is approximately 5 milliamperes. In Sleep Mode the mouse current is approximately 0.6 milliamperes. Based on an Alkaline AA battery of 1500 milliampere hour capacity the batteries should last for about 50 hours if the mouse is constantly in motion and 2500 hours (15weeks) if the mouse is always at rest. I measured these currents with the mouse resting on a uniform white surface (printer paper), a matt black surface, a smooth uniform light tan surface and a faux oak desk top. I found no substantial difference in the currents associated with the various modes due to the surface type. The back of a plastic table place matt makes a great surface for the mouse, smooth and uniform in texture.
When I use the mouse on my light faux oak desk which has rather dark long grain lines the pointer tends to move in small jumps as the mouse crosses the grain lines. On any reasonably uniform surface the operation is smooth and the pointer is well controlled. In my setup with a non-metal computer desk the mouse responded from over10 feet from the receiver. I am not a gamer but to me the pointer responds instantly under all conditions including from Sleep or Slumber mode.
The programmable buttons provide a wide range of options to customize the mouse operation.
