Customer Ratings & Reviews

This is the best mouse ever, don't miss this you will regret it!

Nice upgrade from OG mx master. The haptic feedback is a nice touch

I have been using the MX Master series for a few years both at home and work. USB C charging is great. The battery lasts. The upgraded action button and ring are a welcome change.

Excellent mouse, easy to set up, very responsive. Would recommend.

Works excellent in Mac and windows, The features are great!

Great item! nice improvement from MX 3...feels much better in the hand. A little lag occasionally. Overall really good. hope it lasts longer than my MX 3 which died after about 2-3 years of heavy use

Great mouse, but be aware that is a big mouse. If you have big hands you will love it. If you have smaller hands you will still love it, but accessing some of the feature through the buttoms might be a little tricky. So try before you buy it.

A worthwhile upgrade indeed! It perfectly fits my hand and I use it on all my devices. – Mac mini Pro, iPad Pro, and MacBook Air.

Its the bees knees. All of the extra functions are so useful

The best wireless mouse gets better. I’ve used MX Master for years, comfortable, smooth and feature rich.

Plus an extra button! I like the haptic feedback as well.

Logitech has refined the already great MX product. Shortcuts are great for productivity.

Great mouse with great features! Logitech never disappoints!

The best Mouse ever. Best buy send to me next day. Was perfect .

I have 2s 3s and 4 very good all but new one the best

It's comfortable, easy to use, it helps your joints, practical. I recommend this product.

Always great. Big upgrade over MX Master 3. Works great

Easy Bluetooth connection. Next to the external keyboard probably the most useful accessory.

For me, there really isn't a better brand for input devices than Logitech. I have been using their mice and keyboards for well over 20 years, and they always seem to improve on their already great designs with their new releases. While it has been quite a while since I have used their MX line (got a MX1000 about 19 years ago with its rather large charging cradle), I decided to try out the new MX Master 4 when the left button on one of my Triathlon M720 started doing the multi-click when clicking one (I tend to wear the buttons out quickly with being a programmer and graphic designer (hobbyist)). Having used the M720 as my main mouse for work and home the last 7 years, there are certain requirements I have for any mouse. One being multi-device connectivity as I work from home 60% of the time (well, more including the evening after working in the office) and switch my mouse, keyboard and monitors between my work laptop and personal computer. The other is having programmable buttons in certain locations (I am a creature of habit and "need" those buttons in those locations). The MX Master 4 not only meets those requirements but have thrown in a few extra buttons/wheel. The overall design is just right for me, even though I was a little worried at first since it is a little bigger than the M720 and the left button being slightly higher, but it didn't take long to get used to it. For the grip rubber on both size, that did take a little while as it was almost too smooth at first, but it good now. It is a little heavier, but I can't really tell when moving it around. One thing (of many) I do really like is the quietness of the left and right buttons. As I click a lot (have I mentioned I wear out mouse buttons!), being much quieter is great! For the buttons, there is the normal forward and back thumb buttons, clickable center scroll wheel, but it also has an extra thumb button towards the front, along with a thumb scroll wheel. While they all have their default functions assigned, everything, and I mean EVERYTHING (OK, well, except for the left and right click buttons) can be changed to whatever is desired using the LogiOptions+ application. New to the list of functionality that can be programmed (or at least to me) is Gestures, which is assigned to that new front thumb button. You'll press and hold the button and move in any of the 4 directions to activate an assigned function. There is a list of function types to choose from or go to Custom to make them do anything any of the other buttons can do. Also, Gestures can be assigned to any other button, except for the thumb scroll as it isn’t a button that can be pressed. And a few days after getting the MX Master 4, Logitech updated the Options+ app to provide Gestures to their previous devices (which I have set up on my remaining M720). The wheel mode button, which on my M270 physically changes the center scroll from line-by-line to free scroll, isn't only physically tied to the scroll mode anymore and itself is also a programmable button. While I would normally change to free scroll while going through emails to skim through things faster, the center scroll can be configured to automatically change to free scroll (or hyper-fast scrolling) when to move it faster, so I really don't need to switch anymore (which that button on the M720 is louder than I would like). Also, as the mechanism that provides the stopping effect for line-by-line scrolling isn't physically controlled by a button, an adjustable force level, which I'm really liking! Also new (at least to me) in the Options+ app, is when setting up different button assignments for different applications, for most applications, it has App Specific actions that can be assigned (with different suggestions for what button/wheel is being set up). For me, that means no longer having to find the equivalent keyboard shortcut to assign. The thumb rest button is haptic feedback capable, which plugins can be installed from the Logitech Marketplace. Personally, I have it disabled and have the button press assign to a keystroke (which I use it for Enter since I hit that so much). The pressing of that button has a Sensitivity setting, from Light to Firm. I use light since I use it so much and don't want the extra effort. It does have a warning about using Light as it could lead to accidental clicks, but I don't see it and it still takes some effort and I don't normally squeeze with my thumb that hard. So, for me, the only thing that was missing was the tilt activation of the center scroll wheel, which I had certain keystrokes assigned. I was at least able to compensate with the gestures. Connection to other devices (up to 3 in total) is simple as always (if you are used to previous multi-device mice). The button to assign and change the connected device is on the bottom, near the back. The locations is the only other thing I have a slight issue with as I am used to it being on the top near the thumb buttons on the M720. That location doesn't require needing to lift the mouse up to change devices (just a minor thing for me). The rechargeable battery should have a decent amount of time between charges. With my almost all day, almost every day use, I'm seeing about 7-8% used every 5 days, so I should get a little over 60 of use before needing to charge again. It charges with a USB-C cable plugged in the front and is still usable while charging (unlike that very old MX1000 that sat in the charging cradle). If you are looking for a mouse with almost endless configuration possibilities with multi-device connectivity, this is definitely one that should be considered. Oh, I almost forgot to mention that even though this is the "for Mac" version, it still works just as great with PCs (if you have a mixed device setup).

Pros: • Customizable and powerful out of the box, with new buttons to control gestures, Smart Actions, and a new on-screen Actions Ring that makes your most-used functions available without moving your mouse. • Comfortable, with a "just-right-for-most" hand position and every button within reach. • Great battery life, around 40 days of regular office use. • Even more customization in the Logi Options+ app, which offers control over every aspect of mouse functionality, and allows users to create new Smart Actions and set Actions Panel functions for every app on their computer. Cons: • Hand position is relatively natural, but may not appeal to those who prefer vertical mice. • Not for left-handed users. Full review: The MX Master 4 is Logitech's latest and most profoundly usable entry in their famous MX Master series. The latest and greatest features are a dedicated Gestures button and the new Haptic Sense Panel, located on the thumb rest pad, which provides physical feedback for certain mouse actions, and is used to open the new on-screen Actions Ring that allows immediate app-level control of 8 different customizable functions without lifting your hand off the mouse. The MX Master 4 is every bit as comfortable to use as its predecessors, and the addition of the soft-touch, padded Haptic Sense Panel increases the comfort just a bit. Three large skates on the bottom of the mouse allow it to glide over surfaces both soft and hard, and it tracks cleanly over mouse pads, desktops, and even glass surfaces. The DPI is customizable from 200 to 8000, allowing you to dial in your perfect cursor movement speed. As with previous MX Master offerings, the mouse rises to a crest at the center of your palm, and the button area is tapered forward and to the right, allowing your right hand to rest naturally over it. Yes, this is a right-hand-only mouse. Logitech does make some ambidextrous mice, but none in its MX series. Before the MX Master 4, my daily-use mouse was a Logitech MX Vertical, which has a hand position I slightly prefer. The Master retains about a third of the verticality of its older sibling, which might not be good for someone who really loves the vertical position. The Master 4 is well suited to people with different-sized hands. My hands are quite large, and my middle finger rests all the way to the edge of the right mouse button, which feels comfortable to me. My partner has smaller hands, and says the mouse feels quite comfortable for her as well. Perhaps the most important feature of the MX Master 4 is its customizability. There are copious button-level control options, and programmable Smart Actions that can open apps, control media, and even remake your desktop for work, game playing, or entertainment. Clicking on the Haptic Sense Panel opens the Actions Ring, which offers eight special functions that can be customized depending on the app you're using. It comes programmed with common functions in software like Photoshop and Illustrator, and can be customized in the Logitech Options+ software. Battery life has been quite good, with only 10% consumed after 5 days of heavy usage. This is honestly excellent for a mouse with built in haptics. Speaking of haptics, the Haptic Sense Panel offers little motorized bumps whenever you activate the Actions Panel or hover over one of the functions. These bumps can be set to 4 different levels of sensitivity. For those who prefer not to feel the haptics, they are easy to disable in Options+. Overall, this mouse is simply excellent, and offers the most ways to customize your experience of any on the market. Only left-handed people and those who demand a more vertical hand position will be unable to find a combination of settings on the MX Master 4 that makes them happier and more productive in their digital lives.