Logitech Signature Comfort Plus M850 L mouse review: Comfortable and seamless

Logitech has launched its new Signature Comfort Plus line of mice in India, with the M850 L coming with an in-built palm cushion. But does a mouse with a cushion really shake things up when it comes to how you use a mouse? Let's find out in our full review here at India Today Tech.

Logitech Signature Comfort Plus M850 L review - 8/10

Pros

• Comfortable cushion
• Barely noticeable clicks
• Three device support

Cons

• Connects via only Bluetooth for consumer version
• Runs on AA battery only

In Short

• Logitech Signature Comfort Plus M850 L mouse uses AA battery with claimed two-year life
• It comes with an in-built palm cushion for comfort
• The mouse is priced at Rs 7,762

It's 2026 and most of us now spend a lot of time on screens. Be it your smartphone, TV, or of course, your laptop. While we all know that excessive screen time can take a toll on our eyes, the stress we put on our palms when we use a trackpad or a mouse often goes unnoticed until we find our hands hurting after a long day at work. And Logitech, a company that has been making ergonomic mice for years now, has come up with a new solution with the Signature Comfort Plus M850 L mouse – an in-built palm cushion.

Like the name suggests, the Signature Comfort Plus line-up focuses on your comfort. The M850 L is the first Logitech mouse to get a palm cushion that should make it easier for you to use the mouse for longer periods at work or at home. Now this may sound nice on the surface, but at Rs 7,762, does it really add enough to justify the price tag? Let’s delve right into our full review here at India Today Tech.

Using the Logitech Signature Comfort Plus M850 L

When you first look at the M850 L, it will remind you of other Logitech mouses. It comes in two colours – Graphite and Off-white. We received the Graphite variant for the review. Logitech has focused on sustainability with the mouse. It is made with 49 to 77 per cent certified post-consumer recycled plastic – depending on colour – and comes in FSC-certified paper packaging.

You get a familiar sculpted right-handed design, rubber grips, a scroll wheel on the top, but then you spot the palm cushion.

But before we get to the cushion, let’s discuss the setup process. The Logitech Signature Comfort Plus M850 L runs on a AA battery, which you get in the box.

While this means that you will need to buy batteries to keep the mouse running, the company claims that you can get up to 2 years on a single battery with the M850 L. While we cannot test this claim ourselves, it should give you a peace of mind.

On the bottom of the mouse, you also get a power slide, and a button to pair devices. The Logitech M850 L can connect up to three devices, you can switch between devices by pressing this button – there are indicator lights that tell you which device is connected at any moment.

I connected the mouse to my work laptop and my Oppo Pad 4, and the switching process was quite seamless.

Coming back to the cushion. The cushion, which has the Logitech logo is placed on the upper edge of the top, where your palm rests naturally when you use the mouse. During my time with the mouse, I found that this cushion wasn’t too soft or firm, making it almost ideal. However, since it only sits at the top, the bottom half of your palm does not enjoy this added comfort.

That is not to say that the mouse is uncomfortable in other areas. Rather, the ergonomic design comes in handy in everyday use. For someone like me who spends hours in front of a screen at work, and then more screentime at home to try out gadgets, this makes a difference. I was using a conventional mouse before I got the Logitech M850 L to use, and within minutes I could feel a big change.

Instead of feeling a strain on your palm, you naturally place your palm on the mouse, thanks to its design. The clicks are quite silent and simply not noticeable in a newsroom. Even when I was alone, I could only barely notice the sound of clicks.

Logitech Signature Comfort Plus M850 L buttons and features

Logitech has added a couple of keys to the Signature Comfort Plus M850 L. You get two buttons on the left side that work as forward and backward shortcuts. That is, you can go back or forward in any webpage or app by using these buttons. These keys can also be customised, but more on that later.

The M850 L uses a SmartWheel. Apart from scrolling webpages the usual way, you can also click the wheel to open a webpage in a new tab, or close tabs. This can be particularly useful when you have multiple tabs open, something many of us may be guilty of. The

Above the SmartWheel, there is another customisable key. To customise these buttons, you need to use the Logi Plus app. At a time when AI is everywhere, Logitech is bringing AI features to your mouse too! You can use the app to set up shortcuts or access Logitech’s AI Prompt Builder to generate AI prompts with preset instructions. If you are someone who regularly uses AI tools, you may find this handy.

Though do note that the Logitech Signature Comfort Plus M850 L only connects via Bluetooth for the consumer version. The Logi Bolt USB receiver is for businesses only.

It also comes with 4,000 DPI only, unlike its sister mouse, the Logitech Master MX Master 3 that can go up to 8,000. For context, DPI or dots per inch measures how sensitive the mouse sensor is to physical movement. That is, how far your cursor travels for every inch you move it on your desk.

In case you are a gamer, the M850 L is likely not for you, as gaming mice like the Razer Basilisk V3 have DPIs exceeding 30,000.

Logitech Signature Comfort Plus M850 L verdict: Is it worth it?

Now that we have covered everything about the Logitech Signature Comfort Plus M850 L, let’s come back to what we asked ourselves in the beginning – does the mouse justify its price tag? Well yes, and no, it really depends on what you do.

For someone who scrolls webpages, writes a lot, or creates excel sheets, the M850 L does everything smoothly, and the palm cushion gives the added comfort you didn’t know you needed. The design is sleek, there are a bunch of customisation options, and battery life is good too, even if you can’t charge the mouse. While it doesn’t come with a USB receiver, Bluetooth works well, and you don’t really face any disruptions.

That is to say, the Logitech Signature Comfort Plus M850 L is designed for those who spend hours at work behind a computer screen, and for those who are willing to pay a bit extra for comfort, the mouse justifies its price.

- Ends