I was looking for a high DPI mouse to use with my work laptop to crate a full "wireless" desktop at home.I've been using gaming mice for work for years as I can't stand mice with "average" DPI tracking speeds. I like my mice to be super sensitive so that I barely have to move my hand to move the mouse pointer across the whole desktop and even across multiple monitors.Since I am using this with my work computer that I am not allowed to install random software on it was important to me that the mouse allowed the DPI speed setting to be changed with physical buttons on the mouse. Many gaming mice only allow you to adjust the DPI settings via the companion software which wasn't an option for me on my work computer. This mouse has buttons right on the side that let you adjust the DPI speed between several presets right out of the box, no software needed. You can use the software to further refine exactly what DPI each setting will switch to, but I just set the mouse on the maximum setting using the buttons so I don't care about tweaking it further with the software.I also had tried a Bluetooth gaming mouse from Razer previously, but I found that for whatever reason the Bluetooth connection to Windows was not very reliable and I would often lose connectivity to the mouse. Using the Logitech USB receiver has been flawless and the mouse is just as responsive as my previous wired mice were. The receiver is a standard USB plug, so I'll probably have to get a USB C converter at some point when I get a new computer, but that's not a big deal.On the bottom of the mouse there are two removable panels. Then circular panel reveals a storage area for the tiny USB receiver, and also has spots for two weights on the cover itself. The larger panel has spots for additional weights. I am using all of the included weights as I actually weighed my previous Logitech wired mouse with the weights I was used to and found that adding all of the weights that are included with this mouse make it the exact same weight as my previous wired mouse. I like the mouse to have some heft to it and adding all the weights gets me that. If you like a lighter mouse you can just leave the weights out or adjust them however you like.Another interesting default setting on the mouse is that there is a small button that your thumb can press which will reduce the mouse DPI to the lowest setting while you hold the button down. This is particularly nice if you are like me and use the mouse on the highest setting as you can always push down this button if you need to do any very precise movements such as hovering over a very thin edge of a window to resize it or make minute adjustments when doing image editing, etc.There are a few quirks which are a little annoying, but nothing that would make me want to stop using this mouse.First, the mouse has colored LEDs inside of it as per all the usual gaming devices of today. By default the colors constantly cycle. You can use the Logitech software to setup the light patterns and lights however you like, but if you aren't using the software you are stuck with the default constant cycling. I even installed the software on my personal computer in the hope that any settings I made would be retained when I switched over to my work computer, but sadly the settings reset to the default after a short time if the mouse isn't connected to a computer with the software installed. So I just have to live with the color changing mouse... which isn't a big deal but I was hoping I might be able to get a little better battery life out of it if I turned off the lights.The other quirk is the battery life. I definitely cannot get a full week of work out of this mouse without recharging it. Using Bluetooth would give much longer battery life but it's worth the trade off to me to have the reliable and fast connection using the Logitech wireless adapter. The mouse will show its current battery level via the DPI indicator lights when you first wake it up, and will flash a red light when it is getting low. It uses a braided USB cable for charging and also for connecting it to your computer in wired mode if you like. I've actually just setup the cable to a regular USB charger so whenever the mouse gets low I simply plug in the cable and continue to use it in wireless mode while it charges just from the power source. I leave the cable wrapped around the bottom of my monitor so it's easy to access if I happen to run out of battery power at a bad time, and the cable is long enough to basically just feel like I've switched back to a wired mouse temporarily while it's charging.Overall I think this is the best wireless high DPI mouse you can find, especially if you want one that has all the DPI adjustments right on the mouse itself and doesn't require software.