Build Quality

Overall build quality is solid. When shaking the mouse, a slight rattle comes from the scroll wheel. When applying lateral pressure, no creaking or flexing of the shell can be observed. Activating the side buttons by squeezing the sides is possible but requires excessive force. Lastly, accidental clicks when slamming down the mouse do not occur, regardless of the set button response time.

Buttons

Main buttons on the MM310 are good to very good. There is some pre-travel, but post-travel is low on both buttons, resulting in a firm and fairly snappy button response. Despite being visually separated from the shell, button movement is minimal even when provoked. Button stiffness is medium, but the button design prevents the rear part of the button from being able to be actuated. A pair of Kailh GM 4.0 (60 M) switches are used here.


Side buttons are good (back button) to very good (forward button). The back button has noticeable pre-travel, and actuation isn't entirely even, whereas pre-travel is low on the forward button, and post-travel low on either. Button size and placement are quite good, as actuation is possible rather easily by rolling one's thumb across. A set of Huano (green plunger) switches is used for these.

At the top of the mouse is a button for cycling through the set CPI levels, which feels just fine. Another Huano (green plunger) switch is used for this one.

Scroll Wheel

The scroll wheel is very good. Noise levels are appreciably low, and tactility is above average, providing decently separated steps and controlled scrolling. The encoder comes from Kailh (gray, cyan core) and has a height of 13 mm. The middle (scroll wheel) click requires medium to high force for actuation. Yet another elevated Huano switch (green plunger) is used here.

Surface

The MM310 has a matte surface all over. Grip is fine, and it doesn't attract fingerprints or dirt too much. It is fairly easy to clean, and there are no signs of wear left after doing so. All in all, very good materials.

Button Sound Test

Disassembly

Disassembling the MM310 is reasonably easy. Two screws are found beneath the two rear skates, with an additional one found below the sticker at the rear. After their removal, wedging a credit card or something similar in between top and bottom shell is recommended to separate them easily, but make sure not to rip the cable connecting the top and bottom.

The internal design is very efficient. The side buttons sit on their own PCB screwed into the top shell and connected through a 4-pin connector with the main PCB. An auxiliary PCB next to the scroll wheel provides wheel illumination. The main PCB is very compact and thin, and three screws are used to affix it to the bottom shell. The MCU is a Holtek HT32F52352, whose datasheet can be found here. The production date of the side-button PCB is the 39th week of 2021.


As for the soldering and general quality of the PCB, I'm unable to find any noteworthy flaws. That said, the cable going to the scroll wheel PCB is poorly soldered to the latter.