Build Quality

Overall build quality is solid. When shaking the mouse, a minor rattle comes presumably from the side buttons. When applying lateral pressure, no creaking or 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 occur, albeit only if debounce time is set to 0 ms.

Buttons

Main buttons on the Aria II are good. On the left button, pre and post-travel are moderate, whereas on the right one, pre-travel is high and post-travel low, resulting in a fairly firm and snappy button response nonetheless. Being visually separated from the shell, button movement is moderate when provoked. Button stiffness is medium. A pair of Huano switches (blue transparent shell, pink plunger) are used.


Side buttons are very good (forward button) to decent (back button). While the forward button has low pre and moderate post-travel, pre-travel is high on the back button, leading to mushy actuation, though the actuation point is even across the entirety of these nevertheless. Button size and placement are good, as actuation is possible rather easily by rolling one's thumb across. A set of Huano switches (white plunger) are used for these.

At the bottom of the mouse is a button for cycling through the set CPI levels along with a Bluetooth pairing button, both of which work fine. Seemingly unbranded tactile switches are used for these. A slider switching between 2.4 GHz wireless, Bluetooth, and off-state is also found at the bottom, which works fine.

Scroll Wheel

The scroll wheel is good to very good. Noise levels are mostly under control and tactility is above average, as the individual steps are rather well-separated. The encoder comes from F-Switch (brown, green core) and has a height of 13 mm. The middle (scroll wheel) click requires high force for actuation. An elevated Huano switch (blue plunger) is used here.

Surface

The Aria II has a matte surface all over. Grip is fine, and it doesn't attract fingerprints or dirt 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

Disassembly

Disassembling the Aria II is easy. First, all skates as well as the screws beneath them need to be removed. In addition, four clips at the sides need to be dislodged, which is easily done, but some caution is advised to prevent ripping any cables when separating top and bottom shell.

The internal design is reasonably efficient. The side buttons sit on their own PCB screwed into the top shell and connected through a 3-pin connector with the main PCB, whereas the battery is stuck to the rear, partially covering the main PCB. The main PCB is thin yet rather spacious, and affixed to the bottom with three screws. The MCU is a CompX CX52850, which in turn is a rebranded Beken BK3633, whose datasheet is found here. Production date for all PCBs is the 30th week of 2024.


As for the soldering and general quality of the PCB, I'm unable to find any noteworthy flaws.