[This review was collected as part of a promotion.] Yeah I love it, but there's one thing you need to be careful. Don't follow the size guideline with the credit card measurement. Just measure your hand with ruler and choose the size. My hand was about 3 credit cards, so I ordered normal size.. but actually it was small for me. I end up ordering bigger one and giving that small one as a Christmas present for my sister :p

It's a great mouse, but I think I bought the smaller size on accident, maybe. It's a bit small for my hands so I wish I'd looked for a larger model, but otherwise I really like the color and feel of the mouse and I haven't had any connection issues or anything (well, my Mac keeps disconnecting all bluetooth devices every once in a while, but that's not mouse related obviously).

I am left-handed and the M650 fits my hand really well - especially the back buttons on the right side of the mouse. My hand no longer hurts when I use this mouse for protracted periods of time - which is every day. Also, this mouse is very quiet, but with good hand and finger-feel when clicking the buttons. Overall, very well done. I have been looking for a mouse like this for years and now I have found it!

[This review was collected as part of a promotion.] The mouse has some nice color options, it is quiet, durable, and the scroll wheel feels swift. I wish it had the tilt option but it gets a pass since you can scroll horizontally by pressing the back button and scrolling.

I never knew I could get so excited over a computer mouse. The last couple of years I have been using the M310 silver over black, Yes the color matters for myself, so this black and graphite was great for me. Everything is a upgrade from the M310 and just feels solid like a well built quality tool. It is (simple to use) feels good in the hand. Someone in a review said the rubber like grip on the sides felt like sandpaper, The detents did feel different for the first few days only than the M310, it is a little firmer rubber on the grips with great detents and I just really like the way it feels now after braking it in. Another review that I seen said the green light by the thumb wheel was not working and was returning it but it is not made to stay on all the time. Note my battery was only 80% but I always put a --- ultimate lithium AA battery in anyway. Logitech Canada has a great instructional video you tube on the M650 and with the US one I was up and running in no time... Using the Signature M650 with windows 10 on a 17inch HP Laptop. Watch the Logitech Canada video before you buy and it will also help guide you to get the regular or large size. I like the smaller one for myself.

It works great, but there is something different about the ergonomic design. I continuously accidentally press the right click button. That didn't happen with my previous M510 model. I wanted a left-handed one but there wasn't a M510 for left-handers.

i liked your early version where you could plug it in or use the mat to chage the battery . the one i got cannot unplug from the mouse itself so yeah its a good mouse but has a flaw because im permantly plugged into my pc so left handed use is a hard thing when my right disabled arm starts having a seizure. my early version cuold use a usb instead of keeping it permanantly plugged in all the time

Mouse feel smooth and light, I have the L size and fit comfortable in my hand, my only issue it's with the Bluetooth connection because sometimes the pointer takes few seconds to came back and delay after you are not using.... The USB connection it's the opposite, super fast with no delay or lags

First, I'm a lefty and have had to deal "ambidextrous" mice for years. This mouse (M650L) finally allows me to take advantage of all functions without having to worry about inadvertent actions. I have relatively large hands and this mouse fits my hand nicely. I also like that it can be connected either by Bluetooth or USB, as my laptop's Bluetooth isn't the most reliable. Overall, I couldn't be more satisfied with this mouse and highly recommend it.

This is the best mouse I used so far. Once I was presenting in CEO's office, someone next to me told not to use mouse as it was making clicking noise, it was frustrating. So this works perfectly. I like every aspect of this mouse except its shape. I like the shape of M705 with all this signature M650 feature would be perfect. M705 fits perfectly to my right hand, but with M650 middle keeps dropping.