Pros Battery lasts forever. Extremely comfortable to use. Power switch on the bottom allows cleaning. System tray display shows battery level. Forward and back buttons for web pages. Scroll wheel does side scrolling also. Switchable scroll wheel click.
Cons Recessed hole for laser and sensor accumulates cat hair which must be cleaned out about once a month. Tiny button for "application switcher" is too easy to hit accidentally (I reprogrammed it to "zoom reset").
Summary Logitech is going to go broke if they keep making products like this. It's durable, it's comfortable, and it works well, so where is the incentive for me to replace my mouse regularly? The setup application for it works with my Logitech K350 keyboard too, so I won't get tired of the software either. Unless the ceiling falls in and crushes my keyboard and mouse, I will never want to replace them. Thanks, Logitech!
Worked right out of box
Setpoint to tweak functions
Cons The on light goes off after a few seconds until you turn it off than back on.Maybe to save battery.This isn't really a con just a observation.
Summary It this mouse isn't precise enough for you I don't know what you do with a mouse. I say get a more expensive mouse if that's what you need.
Pros The fact that the mouse has many additional features is a big plus! Also feels good in your hand. Keyboard pad for your palm is nice. Another nice feature is the fact that the keyboard and mouse are using one usb port.
Cons none that I have experienced .
Summary If you are looking for a wireless keyboard and mouse, this is the one to get.
Pros +Good ergonomics. Designed for the right hand.
+Excellent battery life
+Scroll wheel has locked and unlocked mode for fast or precise scrolling
+Wireless and able to connect via Logitech's unifying receiver which supports up to 6 wireless devices in a sin
Cons -Scroll wheel is too stiff to use middle click accurately. When I go to middle click a link in my browser to open a new tab, the wheel will jerk between lines.
-Forward and back buttons do not work as expected out of the box (that is, move back and forwar
Summary The battery life is solid and the extra buttons are nice to have, but it fails in basic needs of precision and a usable scroll wheel click.