This is a superb-looking gaming mouse, it looks like Corsair has put it through a wind tunnel to make it slipstreamed and efficient, and perhaps they have! The lines on it are all very clean and it has a great flow to it that should make it fit in my hand really nicely.
The body has a slightly glossy look to it, it’s very smooth to the touch, with what feels like a UV coating. Now, I like this kind of finish, but I do know that if you’re a gamer who gets very sweaty palms while gaming, it’s not an ideal design for you, so keep that in mind. Thankfully, I don’t suffer from that, so the K75 Air will be great! There are two programmable buttons on the side, which have a short actuation and nice and light crispy clicking switches. The switches have a nice ergonomic shape to them too, making them easy to trigger with a press or a light flick up of your thumb.
The right side of the mouse is nice and smooth, but keep in mind the mouse is ergonomic for right-handed users only.
The LMB and RMB are formed from their own separate panels rather than a unibody design. However, this is beneficial to their performance, as each is individually mounted on their own hinge and spring, so there’s no feedback from one to the other while you’re clicking away.
Corsair has given them what they call “Corsair QUICKSTRIKE Buttons” which is to say that the button is resting directly on the switch. So rather than push it down, then it hits the switch, then you get a click, it’s just right on the click, making them feel lightning fast and responsive. They return as sharp as they click too, meaning you can fire off seriously rapid click rates by just getting the balance of pressure just right, making them superb for fast and snappy gaming in FPS or MOBA-type games.
The shape is absolutely perfect on this mouse too, it fits my hand like it was custom-made for me. Sure, that won’t be true for everyone, but it’s a fairly traditional mouse shape, so it should feel at home for most gamers. However, the overall smoothness and lack of aggressive curves make it pretty user-friendly to hold in any grip style.
What’s more, its insanely low weight of just 60 grams means that it glides really well on most gaming surfaces. A light fingertip grip is all that’s needed to move it around your desktop, from tiny twitchy FPS-like movements to long sweeping curves, it’s almost telepathic in how easy it moves. This is aided both by the low weight of the mouse, but also by the three PTFE feet on the base of the mouse, with a large one at the back and front, and one that encircles the optical sensor in the middle.
On the bottom of the mouse, you’ll also find a connectivity button, allowing you to cycle through Bluetooth and 2.4 GHz dongle mode, with this also acting as a master power-off button should you need it. Obviously, you’ve likely noticed there’s a snug under here for the USB dongle too, so you’ve always got somewhere safe to store it when it’s not in use.
The dongle is compact too, so if you’re using it on a laptop, it’s unlikely to get in your way. Or even if you don’t want that, you can use the Bluetooth mode too, which would increase the battery life of the mouse. Speaking of which, Corsair say this mouse is good for 100 hours anyway, so the battery is unlikely to be an issue between weekly charges, and even then, the mouse is usable while on a USB cable (wired mode) that also charges the mouse. There’s an adjustable sleep mode, and power-saving mode too, so you’re certainly not short on options here.
Despite being wireless, Corsair managed to get a staggering 26,000 DPI optical sensor in this mouse, which can be adjusted in 1 DPI resolution step, so you can really fine-tune each level to suit your needs. Plus, with 650 IPS tracking, even the most enthusiastic of gaming actions won’t throw off its accuracy.
Because it’s so lightweight, you can use ridiculously high DPI levels and tiny movements and it feels remarkably accurate too, which is great for nailing those precision headshots while still retaining the ability for extremely fast turning.
The mouse wheel looks really cool too, with that subtle yellow inner section that uses a few spokes instead of a solid wheel design to keep the weight down. The wheel feels robust, and it has a very clear and defined notch when turned, making it very precise for selecting weapons. Plus, if you like to use a wheel click to melee or jump in FPS games, it has a nice click response of its own too.
Unlike many Corsair devices, it’s not big on RGB though, with just a single multi-performance LED in the top centre of the mouse. However, this can be customised in iCUE and can be used to indicate DPI levels, profiles and the like. Obviously, if they went big on RGB here, it would add more cost, use more battery life and add more weight, so I’m glad they kept the focus on performance this time around.
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