Build Quality

Overall build quality is solid. When shaking the mouse, an occasional rattle comes from an indeterminable location. When applying lateral pressure, the left side flexes and can be pressed in quite easily, provoking a gap between top and bottom shell. Activating the side buttons by squeezing the sides is impossible, however. Lastly, accidental clicks when slamming down the mouse do occur if "Button Response Optimization" is disabled (default) within iCUE; if enabled, they do not.

Buttons

Main buttons on the Sabre RGB Pro Wireless are very good. Being spring-loaded, button response is incredibly snappy, and both pre and post-travel are low. Their click feel isn't entirely uniform, however, as the right button feels mushier and more muted. Despite the buttons being visually separated from the shell, lateral button movement is minimal. Button stiffness is medium to light. A pair of Omron D2FC-F-K (50 M) (China) switches is used.


Side buttons are very good. Both pre and post-travel are low, resulting in a firm and snappy button response. The pressure point is mostly even across the entirety of these. Button placement is great as actuation is possible quite easily by rolling one's thumb across. A set of TTC switches (blue plunger) is used for these.

At the top of the mouse is a button for cycling through the set CPI levels. Its click feel is decent. Another TTC switch (blue plunger) is used for this one. At the bottom of the mouse is a slider alternating between 2.4 GHz, Bluetooth, and off-state, which works just fine.

Scroll Wheel

The scroll wheel is good. It's noisy when scrolling in either direction, but the individual steps are fairly well separated, resulting in above average tactility. The encoder comes from TTC (black core) and has a height of 14 mm. Actuating the middle (scroll wheel) click requires medium force. A seemingly unbranded tactile switch (likely TTC) is used here.

Coating

The Sabre RGB Pro Wireless has a slightly rougher 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 Sabre RGB Pro Wireless is fairly difficult. First, remove the two rear skates. Note that these are double-layered, so getting them off can prove tricky. The Torx T6 screws are the next obstacle. With those taken care of, prying the mouse open at the back is the next step. Bottom and top shell are shut incredibly tight and clipped in at the front, so separating the two requires quite a bit of force. Eventually, it'll snap apart, hopefully without breaking anything in the process.

Interestingly, the internal design differs from the Sabre RGB Pro in several aspects. The side buttons sit on their own PCB clipped in vertically and connected to the main PCB with a three-pin connector. The CPI button has its own PCB screwed into the top shell and connected through a ribbon cable. The battery sits on a plastic assembly erected across the PCB and secured with two screws, amounting to a total of five screws keeping the main PCB in place. Curiously, the battery wasn't sticking to the glue pad when I opened it, and from what I've seen, this doesn't seem to be an exception. While the side-button PCB is slightly thicker, both CPI and main PCB are fairly thin. Production date for the main PCB is the 26th week of 2021. The MCU is a rear-mounted 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.