I used the Corsair M75 AIR in my home office for extended periods of time. I tested out various settings like DPI and customizing button layouts, as well as how well the mouse's ergonomics felt using it in both claw and palm grips and how it held up in right-handed use.

Though the weight takes some getting used to, it’s a well-built and practical mouse that can take some falls without damage. Its shape is suitable for most grip types, though the claw grip feels the most natural to use for me due to its egg shape. I’m not a huge fan of the feel of its paint job, however, as it’s rather coarse, but it does allow for better gripping even when your hands are sweating.Battery life is great going by Corsair’s own claims, with up to 45 hours for wireless connection and up to 100 hours with Bluetooth. While actually measuring that is too daunting, I’ve found that I’m still using the mouse on the same charge through Bluetooth for a week now. The build quality is pretty solid all things considered. There is no rattle from the inside of the mouse, neither does it creak when squeezed hard. The wobble on the left and right main buttons are minimal at best, too. The side buttons, which sit almost flush with the body, are optimally placed and are easy to press during gaming, while the scroll wheel is covered in a thin piece of rubber coating and has very defined tactility to it.

The ‘DPI’ section allows you to change the sensitivity of the mouse. There is only one DPI stage to configure (but of course), as well as a Sniper stage which can be switched to if you bind one of the buttons to the Sniper mode. I've reviewed a number of mice, both gaming and productivity, in my career. This allows me to know what to look for on an individual basis as well as compare the performance of this mouse to other ones I reviewed in the past. Corsair also seems to pride itself on creating a fully symmetrical shape for the M75 Air, which seems like an odd feature to point out considering it isn’t an ambidextrous mouse. The company says the shape is designed to provide “maximum comfort and control”, but I don’t consider it any superior to other gaming mice that aren’t fully symmetrical. In fact, I feel like Corsair overlooked the opportunity to make an ambidextrous mouse by adding two side buttons on the right side, which would have truly justified it’s high asking price considering how few options there are for left-handed gamers. The ‘Device Settings’ tab allows you to enable a number of options, including Sleep Mode, Angle Snapping, Lift height, and more. The included USB receiver supports up to 2,000Hz polling rate, which can be enabled by selecting the receiver icon in the software. That said, the M75 Air is indeed comfortable. The slightly elongated egg-shape took a day or two to get used to (especially coming from a slightly shorter and rounder Razer Viper V2 Pro), but once my palm was adjusted to the shape, I was popping heads and (politely) calling names in Halo Infinite and Overwatch 2 in no time.There aren’t any shortcut buttons on the bottom of the mouse to change the DPI from its default of 1200, meaning all customization options are done through Corsair’s software. You can create unique profiles with different settings for your mouse, which is handy to switch between depending on your current mouse needs.