Build Quality

Overall build quality is very solid. When shaking the mouse, a very minor rattle comes from the CPI button. 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 only occur if debounce time is set to 0 or 1 ms.

Buttons

Main buttons on the Z1 Pro are good. Pre-travel is moderate and post-travel low to moderate, resulting in a firm and fairly snappy button response. Despite being visually separated from the shell, button movement is low even when provoked. Button stiffness is medium. A pair of Huano switches (blue shell, pink plunger) are used.


Side buttons are good (back button) to very good (forward button). Pre and post-travel are fairly low on the forward button, but the back button has noticeable pre-travel, and the button can be pushed in quite a bit past actuation. The pressure point is even across the entirety of these. Button size and placement are good, as actuation is possible quite easily by rolling one's thumb across. A set of Huano switches (white plunger) is 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. In addition, a simple on/off-switch is found at the bottom, which also works fine.

Scroll Wheel

The scroll wheel is good to very good. Scrolling is noisy, but tactility is very nice, with clearly separated steps, allowing for controlled scrolling. The encoder comes from TTC (yellow or "gold") and has a height of 11 mm. The middle (scroll wheel) click requires low to medium force for actuation. A seemingly unbranded tactile switch (black plunger) is used for this one. As can be seen in the picture, some of the wheel lubricant has already sipped into the switch, which doesn't inspire a lot of confidence in its longevity.

Surface

The Z1 Pro 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 Z1 Pro is easy. The screws are found beneath the front and rear skates, which need to be removed. In addition, two clips at the sides need to be dislodged as well, which is most easily done by wedging a credit card or something similar in between. When separating top and bottom shell, make sure not to rip any cables.

The internal design is very straightforward. The side buttons sit on their own PCB screwed to the top shell and connected through a ribbon cable. Everything else sits on the thin yet comparatively spacious main PCB, which has the wheel encoder flipped to the other side. Of particular note here is that some of the wheel lubricant has already sipped into the scroll wheel switch, which constitutes a build quality flaw. The battery is placed atop the sensor with only a thin foam pad between the two. Four screws are used to affix the main PCB to the bottom. The MCU is a Nordic nRF52840, whose datasheet is found here. The Bluetooth functionality of the chip remains unused.


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