Build Quality

Overall build quality is solid. When shaking the mouse, a slight rattle comes from an indeterminable location. 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 Terra Pro are good to very good. Both pre- and post-travel are moderate, resulting in a firm and snappy button response nonetheless. Being visually separated from the shell, button movement is moderate when provoked. Button stiffness is light. A pair of FE optical switches (F1-S100) are used.


Side buttons are good to very good. Pre-travel is low on the back and moderate on the forward button, whereas post-travel is moderate to high on either button, resulting in rather pleasant actuation. The actuation point is even across the entirety of these. Button size and placement are great, as actuation is possible very 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 mostly under control, and tactility is quite good, as the individual steps have a decent degree of separation. The encoder comes from F-Switch (brown/pink core) and has a height of 11 mm. The middle (scroll wheel) click requires high force for actuation. A seemingly unbranded tactile switch (cyan plunger) is used for this one.

Surface

The Terra 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 Terra Pro is easy. The screws are located beneath the front and rear skates. After removing those, three clips placed at the sides and rear also need to be dislodged, which is easily done. Caution needs to be applied when separating the top and bottom shell to avoid ripping the cable connecting the two.

The internal design is unusual yet highly efficient. Both the side buttons and the main buttons as well as scroll wheel encoder sit on their own PCBs screwed into the top shell and connected through a ribbon cable to the main PCB. The battery is stuck to the bottom towards the rear. The main PCB is very thin and compact, but has been extended to the sides to aid with structural integrity. In addition, holes are present across all PCBs to further save weight. The MCU is a Nordic nRF52840, whose datasheet is found here. Production date for all PCBs is the third week of 2025.


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