Build Quality

Overall build quality is 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 Cobra are very good. There is some pre-travel on both buttons, but post-travel is low, resulting in a firm and snappy button response. While the buttons are visually separated from the shell, lateral button movement is minimal even when 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 fairly low on either button, leading to a snappy button response, although the feedback isn't the most pleasing. The pressure point is even across the entirety of these. Button placement and size is good as actuation is possible very easily by rolling one's thumb across. A set of CF (ChangFeng) switches (white plunger) is used for these.

At the top of the mouse is a single button for cycling through the set CPI levels. A seemingly unbranded tactile switch (black plunger) is used for this one.

Scroll Wheel

The scroll wheel is good. Noise levels are elevated, and scrolling down in particular elicits an unpleasant sound, but tactility is quite good, with rather nicely separated steps resulting in controlled scrolling. The encoder comes from Kailh (black) and has a height of 9 mm. Actuating the middle (scroll wheel) click requires medium force. A seemingly unbranded tactile switch (white plunger) is used for this one.

Surface

The Cobra has a rougher 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 Cobra is reasonably easy. Much like on the Viper Mini, the screws are found under the sticker instead of beneath the skates. After removing those, two clips at the rear of the shell need to be dislodged as well, which is most easily done by wedging a credit card (or similar) in between.

Compared to the Viper Mini, the design has been revised in several parts. Instead of being vertically mounted, the side-button switches now sit flush on the PCB, and are actuated by stems connected to the side buttons. Since the sensor is now internally illuminated, external illumination is no longer present, either. Three screws are used to affix the main PCB to the bottom. The MCU is an NXP LPC11U35, whose datasheet can be found here. Production date for the main PCB is the 14th week of 2023.


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