Keychron M3 Wireless Gaming Optical Mouse, Tri-Mode 2.4 GHz/Bluetooth 5.1/Wired, PixArt PAW 3395 Sensor, 4000Hz Polling Rate, 79g Lightweight Programmable Macro Button for Windows PC/Mac - Black

I picked the M3 4K up to replace a dying Logitech MX518. I have a keyboard from Keychron and love it, so it made some sense to try their mouse. After using it for a while for general computing and gaming, I've decided it's a keeper. My hands are on the larger size, hence the 518, and this one is smaller. It is lighter so it's easy to move with your finger tips and my hands haven't cramped. Build quality is solid with no creaking or cheap plastic feel. All buttons click nicely albeit loudly. I will say that the mouse wheel performs very well with a rubber outer layer so your finger tip has excellent grip. It spins easily and clicks into place naturally. Pressing it down feels good and solid without worrying if the wheel is going to roll. Upon moving the mouse, waking it from sleeping, the mouse wheel will briefly light up green or red indicating the charge of the battery. The mouse wheel is probably my favorite thing about it considering it was my biggest worry when ordering sight unseen. Keychron got it right. Connectivity is great so far using the 2.4GHz wireless connection to take advantage of the 4K polling rate. I have not used BT. It charges quickly and holds a charge for days of heavy use. In case your didn't find it clear, the little keyboard receiver connects via USB to your PC. If you keep it close to your mouse, you can unplug the USB cable from the receiver and plug it into the front of your mouse to charge it. So, does the 4K polling make a difference? Yes it does. It's minor, but it is noticeable. The mouse pointer moves a little more smoothly and that translates to better accuracy. It probably won't change your life, but it will add to it a little bit.

This is a very lightweight and responsive mouse. Setting it up is a breeze. Just plug the dongle into your usb port and press the button. Buttons are quite responsive and have a satisfactory click. The scroll wheel is quick and adjustable so whatever speed works for you is just a few taps away. This mouse is replacing my Logitech that was double the price and it performs exceptionally better.

was good while it lasted, broke after 1 year of use. not connecting in anyway. not going on bluetooth, not wired and not on 2.4ghz. i liked it but just completely died on me with just over one year of mild here and there use which is disappointing. LED blinked red when plugging in and then thats it no response in any other way. mouse is dead.

It's not really little, it's a standard-sized mouse. Works great - I use it daily on a Mac because it has great report rate and can be used wirelessly with a dongle, plugged in with cable directly, or via bluetooth (which I avoid on a Mac)

Bluetooth did not work, would not connect. Other Bluetooth devices had no issues but this one did. Scroll wheel felt very heavy and right/left buttons are very loud. Like annoy someone in the next room...loud. It was very lite but I would not recommend it on that alone.