Our Verdict
Good for the office. This mouse is a good option for fingertip grip users since its shape isn't really ergonomic. On the upside, it offers a few programmable buttons that can make your workflow a bit easier and fluid. It's also wireless, which doesn't clutter your desk with a cable.
Okay for FPS games. The mouse has excellent performance and rather low latency for a wireless mouse. However, wired mice with even lower latency are recommended for FPS games. The mouse also isn't the most ergonomic and can practically only be used with a fingertip grip. This mouse is also quite heavy for its size.
Good for MMO games. This mouse offers a few programmable buttons, but won't be as good as a dedicated MMO mouse. The mouse's ergonomics also aren't ideal for most people, as its short body and small shape practically only allow the fingertip grip.
This mouse is rather small and quite heavy, which isn't recommended for ultra-light gaming.
Great travel mouse. The mouse is very small and works wirelessly, which is amazing for working in tight places like on a plane. However, the build quality isn't the best and the top cover might come off when inside a bag.
Changelog
- Updated Dec 09, 2022: We've converted this review to Test Bench 1.2. This update simplifies our Weight test and expands on our CPI test from Test Bench 1.1, resulting in changes to test results in both sections. For more details, you can see our complete changelog here.
- Updated Nov 17, 2022: We've converted this review to Test Bench 1.1. This update revamps our Click Latency test and results in changes to test results. For more details, you can see our full changelog here.
- Updated Oct 05, 2020: Converted to Test Bench 1.0.
- Updated Jun 11, 2020: We've retested the mouse via Bluetooth on macOS 10.15.1 and confirmed reports of compatibility issues.
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Popular Mouse Comparisons
The Razer Atheris is a versatile mouse. It's one of the smallest mice we've reviewed, which is great for travel, but its performance is also great, making it a good option if you want to play a few games with it as well. It's almost only suitable for fingertip grip, but its wireless latency is pretty decent. See our recommendations for the best cheap gaming mice, the best ergonomic mice, and the best mice for MMOs.
The Razer Atheris and the Razer Pro Click Mini are very similar mice, but the Pro Click Mini performs better overall. Although the Atheris is designed for gaming, the Pro Click Mini has lower click latency, a wider CPI range, and more programmable inputs. It feels better-built and more comfortable to use, and it offers a better gliding experience. Also, since it's an office mouse, its scroll wheel unlocks to a free-scrolling mode. On the other hand, the Atheris comes in more colors if you want to match your setup.
The Razer Atheris and the Logitech G305 LIGHTSPEED are both very good mice. They each have two additional side buttons and are fairly small and good for travel, though the Razer is a little smaller. However, the Logitech feels better built and is more suitable if you prefer to use a palm grip with your mouse. The Logitech also only uses one AA battery, while the Razer uses two. On the upside, you can use the Razer with both the USB receiver or Bluetooth.
The Logitech MX Anywhere 2S and the Razer Atheris are both good mice, but the Logitech is better for office use, and the Razer is better for gaming. Both mice are small and better suited for fingertip grips. The Logitech scroll wheel has more features than the Razer, but the Razer has a wider CPI range and an adjustable polling rate.
The Logitech MX Anywhere 3 is a better office mouse than the Razer Atheris. It feels better-built and more comfortable, is lighter, and has lower click latency. However, the Razer is better for travel because it has a slot to store its USB receiver. It also has a wider CPI range, a higher polling rate, and many more programmable inputs.
Test Results

The Razer Atheris is a very low-profile mouse that has an ambidextrous design. It has a Razer logo on the back, but it doesn't have any RGB lighting. The mouse is very small and has rubbery sides for extra grip. The mouse is available in both black and white. Razer also made a Star Wars Stormtrooper Limited Edition of this mouse, although we don't know how long it'll be available.
The Razer Atheris is a great portable mouse that's travel-friendly. This is one of the smallest mice we've tested and it's also wireless, which eliminates the clutter from a cable. It can easily be tossed in a bag, especially since you have a slot inside the mouse to store its receiver. If you'd like a travel-friendly mouse that isn't as small as the Atheris, check out the very generic Logitech M510 wireless mouse.
The build quality of the Razer Atheris is just decent. It's made out of plastic with silicone grips on the side, which feels solid enough, but slightly cheap. There's no wobble or squeaking parts on this mouse, which is good. However, the top cover is fairly loose and thin. It can slightly come off during regular use, making it sometimes frustrating to use the mouse as you need to click the cover back into place. Also, the feet are pretty standard, but the center foot around the sensor is ever so slightly thicker than the rest, making the mouse spin easily, which can result in unwanted cursor movement. If build quality is important to you, then check out the Logitech MX Anywhere 3.
The mouse's very small size affects its ergonomics, which are just okay. This mouse has an ambidextrous design that's only suitable for a fingertip grip. It's better suited for smaller hands, too, since the mouse's body is rather short. On the upside, all buttons are easily reachable. If you'd like a slightly bigger mouse that can be used with more grip types, check out the Corsair KATAR PRO Wireless.
The Razer Atheris has amazing wireless connectivity. It can be used via Bluetooth or its dedicated receiver. You can easily choose your connection option thanks to the switch that's under the mouse, which also doubles as a power-off switch. Unfortunately, this mouse needs two AA batteries, so you'll need to change them at one point, but Razer advertises up to 350 hours of battery life. If you're interested in a similar wireless mouse with a rechargeable battery, check out the ASUS ROG Gladius II Wireless.
This mouse doesn't have any cables.
All the buttons of the Razer Atheris are customizable, and you can even set the scroll up and down to different commands. You can also reprogram the left click, but it has to be assigned to another button first. You can also set a profile switching button, but this isn't available by default.
The Razer Atheris's latency is pretty decent. Using this mouse for daily tasks will be great as most people won't notice any delay, whether via Bluetooth or with the receiver. However, for competitive gaming, there are better wireless options, like the Logitech G Pro Wireless or the Razer Viper Ultimate.
The Razer Atheris' mouse wheel is pretty standard. It offers good feedback from the incremented design, but isn't ideal for long scrolling like office-oriented mice. If you want a scroll wheel with L/R tilt buttons, check out the Logitech M525. For a scroll wheel with L/R tilt buttons that also unlocks for free scrolling, check out the Logitech MX Anywhere 2S.
The Razer Atheris is loud, but it still shouldn't bother those around you unless you're in a noise-sensitive environment.
The Razer Synapse 3 software offers good customization options to Windows users. You can modify the keybindings of each button, which is saved inside the onboard memory of the mouse, meaning you won't lose your favorite settings if you use your mouse with another computer. You can also create profiles inside the app and then assign a profile switching button for you to cycle through them.
Update 06/11/2020: With macOS 10.15.1, the mouse doesn't work via Bluetooth anymore. You need the USB dongle to use it effectively. The text has been updated.
The mouse is fully compatible and customizable on Windows. However, the software isn't available on macOS so you won't be able to customize the mouse. Also, on macOS 10.15.1, you need to use the dongle as there are now Bluetooth issues with this mouse with this latest OS version.