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Logitech M705 vs M720 (2021): Which Wireless Mouse Wins?

Whether for office or gaming use, the Logitech M705 Marathon and Logitech M720 Triathlon wireless mice are two of the most impressive choices today. As their names suggest, both Logitech M705 and M720 are absolute workhorses in terms of battery life. Moreover, their ergonomic shapes can guide your hand to a naturally comfortable position for smooth gliding and clicking. Here’s our comparison between these two top tier wireless mice from Logitech.

Logitech M705 vs M720 Gaming Mouse Comparison Chart

ModelLogitech M705 MarathonLogitech M720 Triathlon
 Logitech M705 Wireless Marathon Mouse for PC - Long 3 Year Battery Life, Ergonomic Shape with...Logitech M720 Triathalon Multi-Device Wireless Mouse – Easily Move Text, Images and Files Between...
PriceCheck PriceCheck Price
Sensitivity1,000 dpi1,000 dpi
Easy SwitchNoYes
Batteries2 AA batteries1 AA battery
Battery Life36 months24 months
Dimensions4.3 x 2.8 x 1.7 inches4.5 x 2.9 x 1.8 inches
Weight4.76 oz (135 g)4.76 oz (135 g)
PlatformWindows, Mac OS, Chrome, LinuxWindows, Mac OS, Chrome, Linux


The Logitech M720 is slightly more ergonomic than the Logitech M705.

On the left is the two-tone Logitech M705 Marathon while the Logitech M720 Triathlon sports a single-color shell.

Numerous design differences give the Logitech M705 and M720 very distinctive looks. The Logitech M705 Marathon has a two-tone sculpted shape that curves naturally to your right hand. All 7 buttons are placed right where your fingers can easily reach them, including the two thumb buttons that let you flip forward and back on web browsers. Its thumb rest features rubber grips so it doesn’t slip from your grasp while moving.

You’ll notice that the Logitech M720 Triathlon has a slightly more symmetrical shape though it also provides plenty of support for your right thumb. Its left and right buttons are also clearly outlined and can be pressed throughout the indicated areas. A small LED indicator at the very middle will light up if the battery gets low (which will take a long time). It has the same tilt wheel as the M705 and hyperfast scrolling button below.

The Logitech M720 Triathlon has one button more than the M705 Marathon, and it’s located alongside the two thumb buttons. The numbers 1, 2, and 3 indicate which device the mouse is currently connected to, a feature which we’ll go over in the next section. Both are wireless and come with tiny Unifying receivers that can stay plugged in to your PC or laptop.

Size-wise, the Logitech M705 and M720 are similar in how they will fit small and large hands. However, the Logitech M720 Triathlon is lower and flatter on the front and peaking further back, following your hand’s natural curve better. In comparison, the M705 Marathon is taller in the middle. You can see this better in the image below.


The Logitech M720 has more functionalities than the Logitech M705.

Aside from the extra thumb button, the Logitech M720 (bottom) has a more slanted curve than the M705 (top).

First off, the similarities: both Logitech M705 and M720 have hyperfast scrolling that let you speed through multi-page documents and long web pages. They also have tilt scroll functionalities for horizontal scrolling. The Logitech Unifying receiver they come with lets you connect multiple compatible peripherals so they only use a single USB slot.

Now, as the newer model, the Logitech M720 Triathlon has a few more tricks up its sleeve. Easily visible is the Easy-Switch technology that appears as an extra thumb button with three illuminated numbers. Pressing this lets you switch seamlessly between up to three computers, making it an ideal productivity device.

Logitech Flow lets you use a single keyboard and mouse pair for up to three computers.

Moreover, the M720 is equipped with Logitech Flow, letting you move your mouse pointer across three different computer screens as if they’re set up as multiple monitors for one PC or Mac. Even better, you can copy-paste text and transfer files between them, too; no need for cloud services or self-sending.

Finally, you can download Logitech Options software to assign buttons with different tasks and functions as needed. All in all, these make the M720 Triathlon the more attractive option if you work on multiple devices.


The Logitech M705 has a longer battery life and surface compatibility than the Logitech M720.

Arguably the best thing about both Logitech M705 and M720 are their amazing battery efficiency.

The Logitech M705 and M720 weren’t named Marathon and Triathlon, respectively, for nothing. These wireless mice are powered by AA batteries and can last month after month without needing replacements. The M705 lasts 50% longer, with up to 36 months of battery life with two AA batteries (included). On the other hand, the M720 only requires a single AA battery to last up to 24 months.

However, the Logitech M720 Triathlon has dual connectivity. It can be used on laptops and computers either via the included Unifying receiver or through Bluetooth. Meanwhile, you can only use the M705 Marathon with the USB receiver so it can only be used on one machine at a time.

Both mice have up to 1000 dpi sensor resolution, making them ideal for office use, but use different sensor technologies. The Logitech M705 has laser grade tracking for precise control even over difficult surfaces like polished wood. Meanwhile, the M720 uses Logitech advanced optical tracking. Using a mouse pad will negate the slight advantage of the M705, though.

Clicks on both wireless mice are satisfying and highly responsive. There’s no connection loss while operating either device. Combined with their fantastic battery life, you might take for granted how amazing the Logitech M705 and M720 are for daily work tasks and general browsing.


The Logitech M720 Triathlon is better for office use and overall productivity than the Logitech M705 Marathon.

With its Easy Switching feature, the Logitech M720 Triathlon is the easy recommendation if you’re looking for a wireless mouse that can help improve your work productivity. It shines brightest when you use multiple computers as the Logitech Flow provides fluid operation while its Bluetooth connectivity makes pairing faster and easier. The M720 is slightly more ergonomic as well, and its low energy tech lets it last an impressive 24 months.

As it was released at the same price point as the M720, the Logitech M705 Marathon is now a bit lacking in extra features. However, it makes up for it by having even more muscle under the hood with battery life that can last up to 3 years. This means you won’t need to worry about suddenly being unable to work because of a dead mouse. The M705 is also a good budget pick nowadays due to bigger discounts than the newer M720.


📌 Does Logitech M720 work with iPad?

Yes, the Logitech M720 Triathlon wireless mouse is compatible with iPadOS 13.1 or later versions. You’ll need to enable the Assistive Touch accessibility feature in your iPad’s settings.

📌 Is Logitech M705 good for gaming?

The Logitech M705 Marathon works well for games as long as you don’t need higher sensor resolutions than its maximum of 1000 dpi.

📌 Is the Logitech M705 Bluetooth?

No, the Logitech M705 wireless mouse does not use Bluetooth to connect with other devices. It requires the included Unifying receiver in order to sync and communicate with the computer it’s plugged in to.

📌 How do I connect my Logitech M720 mouse?

Press the Easy-Switch button until the connection number you wish to use lights up. Then press and hold the button until the number blinks rapidly, which indicates that the Logitech M720 has paired successfully with the computer or laptop.

Last update on 2020-12-23 / Affiliate links / Images from Amazon Product Advertising API

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Derick Bondoc

Managing Editor at Compare Before Buying. Writer and researcher passionate about gadgets, gaming and snacks.