Build Quality

Overall build quality is very solid. There is no rattle when shaking the mouse. When applying lateral pressure, no creaking of the shell can be observed. It is impossible to activate the side buttons by squeezing the sides with any amount of force. Lastly, no accidental clicks occur when slamming the mouse down.

Buttons

Main buttons on the Mira-S are very good. Pre-travel is very low and post-travel low, but the click feel is rather dull nonetheless. Since the main buttons are separated from the shell, minor button movement can be provoked, but it's not noticeable during use. Button stiffness is light. Omron D2FC-F-K (50M) (China) switches are used for these.


Side buttons are very good. There is some pre-travel, but post-travel is low. The pressure point isn't entirely even, resulting in a slightly flimsy click feel. Button size and placement are good as actuation is possible rather easily by rolling one's thumb over these. Additionally, the side buttons are bulged instead of flat, which makes it easier to grip them by feel. Huano switches (blue shell, white plunger) are used here.

At the top of the mouse is a button for cycling through the set CPI levels. Its click feel is decent. An unbranded tactile switch is used for this one.

Scroll Wheel

The scroll wheel is good. Neither scrolling up or down produces any unwanted noise. The individual steps sorely lack separation though, which results in poor tactility. In fact, scrolling is light to where I ended up over and undershooting somewhat frequently. The encoder is a black TTC. The middle scroll wheel click requires medium force for actuation. As a result, those using the scroll wheel click in-game may end up scrolling instead of clicking more often than not. Another unbranded tactile switch is used for the wheel click.

Coating

The Mira-S has a matte coating all over. It's very grippy and doesn't attract fingerprints, dirt, or the likes too much. It's easy to clean, and there are no signs of wear left after doing so. All in all, an excellent coating.

Button Sound Test

Disassembly

Disassembling the Mira-S is very easy. Just remove the two bottom mouse feet, unscrew the screws, and pop the bottom shell off, which is merely clipped in at the front. The internal design is pretty straightforward as well. Nearly everything sits on a single PCB. The side and top buttons have their own PCB screwed into the top shell and connected to the main PCB through a 4-pin JST connector. Additionally, a small elevated PCB is attached to the scroll wheel for illumination. All PCBs are rather thin in order to keep the weight low. Also notable is how small the PCB is. Production date for the main PCB is the 18th week of 2020—7th of April, to be precise. The MCU is a BY8948-00006, which can also be found on the Glorious Model D or O-, among others.


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