Build Quality

Overall build quality is very solid. There is no rattle 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 not occur.

Buttons

Main buttons on the DeathAdder V3 are very good. Both pre and post-travel are moderate, but button response is firm and snappy nevertheless. While the buttons are visually separated from the shell, lateral button movement is minimal and needs to be provoked. Button stiffness is medium. A pair of Razer-branded 3rd-generation optical switches are used.


Side buttons are very good. Both pre and post-travel are very low, resulting in a very satisfying button response. However, the back button in particular sounds rather odd. The pressure 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 low-profile switches (white plunger) from CF (ChangFeng) is used for these.

Underneath the mouse is a single button which either cycles through the set CPI levels if pressed briefly or switches between 1000 Hz and 8000 Hz if pressed and held for five seconds, which works just fine. A seemingly unbranded tactile switch is used for this one.

Scroll Wheel

The scroll wheel is good to very good. Noise levels are somewhat elevated, and tactility is merely decent, resulting in smooth but not particularly controlled scrolling. The encoder comes from Kailh (gray, black core) and has a height of 15 mm. Actuating the middle (scroll wheel) click requires medium force. A seemingly unbranded elevated tactile switch is used for this one.

Surface

The DeathAdder V3 has a slightly roughened matte surface. Grip is fine, and it doesn't attract fingerprints, dirt, or the likes too easily. 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 DeathAdder V3 is easy. First, the rear skate and three Torx T6 screws underneath need to be removed. Before the top and bottom shell can be separated, two clips at the sides need to be dislodged, which is best done by wedging a credit card in.

The internal design is highly efficient. The side buttons sit on their own PCB connected to the main PCB through a 2-pin connector and vertically slotted into a plastic assembly that is part of the bottom shell. Everything else sits on the compact main PCB, which is very thin to save as much weight as possible. Three screws in total are used to affix the PCB to the bottom. The MCU is an NXP LPC5528, whose datasheet can be found here. Production date for the side-button PCB is the 7th week of 2023, whereas the main PCB has been manufactured during the 28th week of 2022.


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