Build Quality

Overall build quality is solid. A minor rattle comes from the on/off switch when shaking the mouse. 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 occur regularly if debounce time is set to 0 ms and very rarely if debounce time is set to 2 ms.

Buttons

Main buttons on the Model D- Wireless are very good. Both the left and right main button have noticeable pre-travel but low post-travel. Button response is very firm and snappy, though feedback is slightly duller on the right button. Despite the buttons being visually separated from the shell, lateral button movement is minimal and needs to be provoked. Button stiffness is medium. A set of Kailh GM 8.0 (80 M) switches is used.


Side buttons are good. While the forward button has fairly low pre and low post-travel, the back button has noticeable pre and post-travel. Furthermore, when pressed towards the back, the back button can be pressed in a fair amount before the button is actuated. Click feel itself is firm and satisfying. Button placement is great as actuation is possible very easily by rolling one's thumb across. A pair of Huano switches (green plunger) is used for these.

At the top of the mouse is a single button for cycling through the set CPI levels. Its click feel is good. Another Huano switch (green plunger) is used for this one. At the bottom of the mouse is a simple on/off-switch, which works just fine.

Scroll Wheel

The scroll wheel is excellent. Noise levels are appreciably low, and quite curiously, tactility is better than on the Model D Wireless, with clearly discernible steps and a matching tactile feel while scrolling. The encoder comes from F-Switch (brown, green core) and has a height of 13 mm. The middle (scroll wheel) click requires high force for actuation. Yet another Huano switch (green plunger) is used here.

Surface

The Model D- Wireless has a smooth matte surface all over. It doesn't attract fingerprints, dirt, or the likes 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 Model D- Wireless is quite easy. First, remove the two rear skates and the screws beneath. Once those are taken care of, simply pop the top and bottom shells apart, which are kept together by two clips at the front and two on the sides. Some caution ought to be applied as several cables connect top and bottom.

Compared to the Model D Wireless, we're seeing a slightly different design. The side buttons now are a separate piece screwed to the top shell with a single screw and further kept in place by a plastic assembly attached to the side-button PCB. The side-button PCB also holds the battery and is affixed with two screws. A 3-pin JST connector connects the battery to the main PCB, while a 4-pin connector connects everything else. Two ribbon cables coming from the main PCB power the side LED strips. An auxiliary PCB next to the scroll wheel provides wheel illumination. The main PCB itself is absolutely packed. The board layout also differs from the Model D Wireless, which was marked as CM2827 Revision 0.3, whereas this one is CM2829 Revision 0.4. A different antenna is used as well. While the side-button PCB is very thin, the main PCB is of medium thickness. No more than a single screw and two pins are used to affix the main PCB to the bottom shell. The MCU is a Nordic nRF52840, whose datasheet can be found here.


As for the soldering and general quality of the PCB, I'm unable to find any noteworthy flaws. Most curiously though, it seems some of the foam cushioning the battery has dissipated and bled onto the battery cable. I've been informed by Glorious that there are three possible explanations for this, none of them including heat: (1) The unit was assembled while the foam was not dry yet; (2) the unit was stored in a damp and humid environment; (3) the glue attacked the foam.