Build Quality

Overall build quality is solid. A slight rattle comes from an indeterminable internal location when shaking the mouse. When applying lateral pressure, no creaking or flexing of the shell can be observed. The back side button can be activated by squeezing the sides, but doing so requires excessive force. Lastly, accidental clicks when slamming down the mouse do not occur regardless of the set debounce time.

Buttons

Main buttons on the Burst Pro Air are very good. The left button in particular has noticeable pre-travel, but lower post-travel, whereas the right one has less pre and more post-travel. While the left button feels snappy and pleasing, the right one is rather dull and muted. Despite being visually separated from the shell, lateral button movement is as low as physically possible. Button stiffness is medium. ROCCAT-branded optical switches are used here.


Side buttons are very good to excellent. Both pre and post-travel are very low, resulting in a very snappy and firm button response, and the pressure point is even across the entirety of these. That said, the back button doesn't feel quite as solid as the forward button. Button placement is great as actuation is possible very easily by rolling one's thumb across. A pair of low-profile switches (white plunger) from CF (ChangFeng) is used.

At the top of the mouse is a single button for cycling through the set CPI levels, which works fine. Another switch from CF is used for this one. At the bottom of the mouse is a slider which switches between off-state, 2.4 GHz wireless, and Bluetooth, which too works perfectly fine. The button next to it can be used to pair the mouse with a dongle.

Scroll Wheel

The scroll wheel is very good. Scrolling up or down is somewhat noisy, but the individual steps are quite nicely separated, resulting in above average tactility. The encoder comes from ALPS (black) and has a height of 11 mm. The middle (scroll wheel) click requires medium force for actuation. A seemingly unbranded elevated tactile switch is used for this one.

Surface

The Burst Pro Air has a smooth matte surface all over. Grip is fine, and the surface doesn't attract fingerprints or dirt in general. 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 Burst Pro Air is very easy. The screws are located beneath the front and rear skate. After removing those, the top shell can be lifted with ease.

The internal design is fairly simple too. The side buttons and CPI button sit on their own PCBs screwed to the top shell and connected with a 3-pin and 2-pin connector, respectively. An auxiliary PCB next to the scroll wheel provides wheel illumination. The battery sits on a plastic assembly erected above the main PCB and secured by two screws. A single additional screw is used to affix the main PCB to the bottom shell. All PCBs are fairly thin. The MCU is a Nordic nRF52840, whose datasheet can be found here. Production date for the side-button PCB is the 38th week of 2021.


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