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, no accidental clicks occur when slamming down the mouse.

Buttons

Main buttons on the Naos Pro are very good. Pre-travel is low and post-travel moderate, resulting in a snappy and firm button response. The buttons can still be actuated quite far back on the mouse, though the shell imparts a high degree of rigidity in that case. Button stiffness is medium. A pair of Kailh GM 8.0 (80 M) switches is used.


Side buttons are good. While the click feel is rather pleasing, both the forward and back button have some pre-travel and significant post-travel in particular. The back button also suffers from an uneven actuation point, which further adds to the mushiness. Button placement is good as actuation is possible very easily by rolling one's thumb across. A pair of TTC switches (red plunger) is used here.

At the top of the mouse are two buttons for cycling up and down through the set CPI steps, which work just fine. These appear to be TTC switches (blue plunger) with the old logo.

Scroll Wheel

The scroll wheel is good. Scrolling in either direction is quite noisy, but tactility is good, providing clearly discernible steps and no accidental scrolling. The encoder comes from ALPS (black core) and has a height of 9 mm. The middle (scroll wheel) click requires medium to low force for actuation. Another TTC switch (white plunger) is used for this one.

Coating

The Naos Pro has a smooth matte surface all over. 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

Disassembly

Disassembling the Naos Pro is very easy. Just remove all the mouse feet, unscrew the screws, and pop the top and bottom shell apart. The internal design is notably inefficient. Clearly, saving unnecessary weight was no concern here. The top and side buttons sit on their own PCB, erected above the main PCB, which holds everything else. Both PCBs are incredibly thick, and the main PCB in particular has a lot of unused space. Production date for both PCBs is the 49th week of 2020. An auxiliary PCB for illumination purposes can be found next to the scroll wheel. Three screws and a pin are used to secure the main PCB to the bottom shell, and another two affix the side-button PCB. The MCU is an STM32L072RBT6, whose datasheet can be found here.


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