Build Quality

Overall build quality is very solid. There is no rattle when shaking the mouse. When applying lateral pressure, minor creaking but no flexing of the shell can be observed. Activating the side buttons by squeezing the sides is impossible. Lastly, accidental clicks when slamming down the mouse do not occur.

Buttons

Main buttons on the Aerox 9 Wireless are very good. The right button has some pre-travel, and both buttons have noticeable post-travel, but button response is firm and snappy nonetheless. Button stiffness is light. Despite being visually separated from the shell, lateral button movement is low and needs to be provoked; i.e., is not noticeable during typical use. A pair of TTC Golden Micro Dustproof (80 M) switches is used.


Side buttons are excellent. Both pre and post-travel are very low, which is remarkable for this kind of design. Even the pressure point is mostly even on the majority of these. In terms of layout, there is room for improvement. The buttons aren't arranged in a straight grid, but rather with an offset, which can make it difficult to clearly identify which button is which. This is further compounded by all buttons being smooth, as some physical markers, such as different button height, a dot pattern, or different texture, would've aided in differentiating the buttons from each other. Several seemingly unbranded tactile switches are used for these.

At the top of the mouse is a single button for cycling through the set CPI steps, which works just fine. A low-profile switch from Huano (white plunger) is used for this one. At the bottom, a slider switches between 2.4 GHz mode, Bluetooth, and off-state, which too works fine.

Scroll Wheel

The scroll wheel is very good. Scrolling is somewhat noisy, but tactility is great, with clearly discernible steps and a matching tactile feel while scrolling. The encoder comes from TTC (blue core) and has a height of 5 mm. The middle (scroll wheel) click requires medium force for actuation. A seemingly unbranded tactile switch is used here.

The scroll wheel can also be tilted to the left and right for access to two additional button functions. When doing so, tilting to the right will be stiffer than tilting to the left. I didn't encounter any issue with accidentally actuating the middle click when tilting the wheel. Another set of seemingly unbranded tactile switches is used for these.

Surface

The Aerox 9 Wireless has a rougher matte surface all over. Grip is fine, and it doesn't attract fingerprints, dirt, or the likes too much. It is easy to clean, and there are no signs of wear left after doing so. All in all, excellent materials.

Button Sound Test

Please note that the Aerox 9 Wireless has the ability to tilt the scroll wheel, which I forgot to include in the video.

Disassembly

Disassembling the Aerox 9 Wireless is easy. First, the skates need to come off. The screws beneath them are exclusively Torx T5. After taking care of those, the top shell can be popped off with ease. From there, the side panels can be removed, which are affixed to the bottom shell with three screws each. While disassembly is much easier than on the Aerox 5 and Aerox 5 Wireless, unlike on those, the side panels don't sit entirely flush with the front of the bottom shell.


The internal design is fairly simple, too. The side buttons sit on their own PCB connected to the main PCB with a ribbon cable. A large plastic assembly is erected above the sensor, which serves several functions. For one, it holds the battery, which is stuck to it. In addition to this, the PCB for the CPI button is screwed atop and connected to the main PCB with a 2-pin connector. Lastly, a large spacer goes towards the side-button PCB. The purpose of this spacer is to stabilize the left side panel, especially when pressure is applied to it. The wheel encoder too sits on its own PCB, which is connected to the main PCB with a 3-pin connector. The wheel case is shaped in such a way that it may press on any of the three tactile switches mounted directly onto the main PCB. Five screws in total are used to affix the main PCB to the bottom shell, which is moderately thick, just like the other PCBs. The MCU is a Nordic nRF52833, whose datasheet can be found here. Production date for the side-button PCB is the 36th week of 2021, while the main PCB has been manufactured during the 48th week of 2021.


As for the soldering and general quality of the PCB, I'm unable to find any noteworthy flaws. However, for reasons entirely unknown, excessive amounts of glue are used on all connectors. Whoever put this together may simply be fond of glue.