Build Quality

Overall build quality is solid. When shaking the mouse, a faint rattle comes from the main 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 not occur.

Buttons

Main buttons on the Z2 Mini are good. Pre-travel is moderate to high and post-travel is high, resulting in a fairly firm and snappy button response nonetheless. Being visually separated from the shell, button movement is low to moderate when provoked. Button stiffness is medium. A pair of Huano switches (green transparent shell, white plunger) (100 M) are used.

Swapping the switches is done by unscrewing the screws (PH 00) beneath the switch, unseating the switch, installing the new one, and screwing it back in. Accessing the switches requires disassembling the mouse.


Side buttons are very good to excellent. Pre- and post-travel are low to very low, and actuation is even across the entirety of these. 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, which works just fine. A seemingly unbranded tactile switch is used for this one. A slider at the bottom switches between 2.4 GHz wireless, Bluetooth, and off-state, which also works fine.

Scroll Wheel

The scroll wheel is good. Noise levels are rather high when scrolling up, and tactility is merely slightly above average, with the individual steps being quite well-defined. The encoder comes from F-Switch (brown, green core) and has a height of 11 mm. The middle (scroll wheel) click requires high force for actuation. A seemingly unbranded tactile switch is used for this one.

Surface

The Z2 Mini 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 Z2 Mini is easy. The screws are found beneath the front skate, along with an exposed screw at the rear. After removing those, four additional clips at the sides need to be dislodged, which may require wedging a credit card (or similar) in. When separating top and bottom shell, make sure not to rip the cable connecting the two.

The internal design is reasonably efficient. The side buttons sit on their own PCB screwed to the top shell and connected to the main PCB through a ribbon cable. The battery is placed on a sticky pad towards the rear. Six screws are used to affix the thin yet arguably oversized main PCB to the bottom shell. The MCU is a Nordic nRF52840, whose datasheet can be found here. Production date of all PCBs is the 32nd week of 2024.


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