The contoured mx mouse fits my hand perfectly while gliding effortlessly. The main scroll wheel has a neat feature where you can switch it between a smooth low friction wheel and a ratchet style.

The battery is amazing too, and it sleeps very fast when not in use. The battery life is much like my other devices, so nothing special here, but i'm also glad that the batterylife is not a dud!

Easy set up, and connectivity. I'm now (almost) at the point where all my computer accessories are logitech. The dual connectivity options via the single dongle or bluetooth is another plus.

Logitech mx keys s combo is a quiet but crisp, tactile typing experience. The 3s has silent clicks compared to the 3 which is more clicky. This combo absolutely nails the fundamentals.

The 3s is wildly better and more satisfying to use than its predecessor. The accuracy improvement vs the older master 3 mouse is slightly noticeable.

The cursor jumps as you sweep across the screen. The wheel scroll does not always register and so i find myself scrolling a little bit, then fast er to actually make it register, then inevitably scrolling back up because it went too far. The mouse whe...  Read More

The polling rate is either a lie or implemented so cheaply that it looks like you're running at 20 fps. It appears the battery can be replaced, but it's not a simple & easy task.

Returning this mouse and settling on a mx master 3 advanced. There's like four copies of photoshop in logi options + (with identical shortcuts in each) when i open photoshop and try to use it, none of the mouse shortcuts work.

The bluetooth is essentially useless. It's choppy and inconsistent. The connection via unifying receiver and the bluetooth connection have incredibly unreliable performance.