Excerpt: I bought this to replace my previous wireless mouse that didn't have the USB mini-transmitter. My husband had bought one like it (turns out it was a model M310) which he liked and I didn't notice the difference when I got it.
Pros: small for traveling
Cons: unstable, Pricey/Poor Value, Difficult to Use
Summary: Have bought several Logitech mice. All very good except this one. The wheel and wheel-buttons always felt cheap and sure enough they broke within a month. I would go for a bit more expensive selection if you want a reliable mouse.
Summary: My own experience, have been using the mouse for about a month... pros: - inexpensive - ambidextrous; - feels proper in weight; - you can store the receiver inside the mouse in case you are using it unified with another Logitech device.
Summary: I've had a number of Logitech mice over the years, and have come to expect reliability, build quality, and a great product. That said, I'm disappointed they put their name on this mouse. I've used it for a few months now, and issues I had at the beginning that I thought would work out never have.
Summary: The mouse is too sensitive for me. It's hard to game with. I hardly have to move the mouse anywhere. Too much movement and I lose control and I'm all over the place. Not good for fast paced gaming. However if you aren't using it to game, should be a nice mouse.
Summary: Stopped working within 8 months. Bought last year and working fine with new battery for some time. And handled with great care. Stopped working last month, replace Duracell but still not responding. Not worth buying this wireless mouse.