Build Quality

Overall build quality is solid. There is no rattle when shaking the mouse. When applying lateral pressure, minor creaking but no 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 StormBreaker Max CF are good. Both pre- and post-travel are low to moderate, resulting in a fairly firm and snappy button response. The buttons aren't entirely uniform, as the left one feels slightly crunchy and less defined than the left button. Compared to other mice using the same switches, these seem higher-pitched. Despite being visually separated from the shell, button movement is low even when provoked. Button stiffness is medium to light. A pair of Omron D2FP-FN2 (China) optical switches are used here.


Side buttons are very good to excellent. Both pre- and post-travel are minimal, resulting in pleasing actuation. The actuation point is even across the entirety of these. Button placement is good as actuation is possible very easily by rolling one's thumb across. A set of surface-mounted switches from Omron (blue plunger) are used for these.

A simple on/off-slider is found on the bottom, which works fine.

Scroll Wheel

The scroll wheel is very good. Noise levels are slightly above average, but tactility is great, with clearly defined steps. The encoder comes from TTC (Gold) and has a height of 13 mm. The middle (scroll wheel) click requires high force for actuation. A seemingly unbranded tactile switch is used for this one.

Surface

The StormBreaker Max CF 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 StormBreaker Max CF is very easy. The screws are found beneath the rear skates. After removing those, two additional clips at the front need to be dislodged, which is easily done. When separating top and bottom shell, make sure not to rip the cable connecting the two.

The internal design is efficient. The side buttons sit on their own PCB screwed to the top shell and connected through a ribbon cable to the main PCB. The sensor likewise sits on its own PCB connected to the main PCB through a ribbon cable. Two screws are used to affix the sensor PCB to the plastic assembly used to adjust sensor position. The plastic assembly is attached to two rails positioned laterally, and by loosening and tightening the screw associated with each rail the sensor PCB can be moved around. Everything else sits on the thin main PCB, which is affixed to the bottom with four screws. The MCU is a Nordic nRF52840, whose datasheet is found here. The Bluetooth capability of the chip remains unused. Due to the coating present on it, identifying the secondary USB High-Speed MCU isn't possible. Production date for 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.