Build Quality

Overall build quality is very solid. A slight rattle comes from the CPI button 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 Pulsefire Haste Wireless are excellent. Pre-travel is low and post-travel moderate on either button, resulting in pleasingly snappy and crisp actuation. Despite being visually separated from the shell, lateral button movement is minimal. Button stiffness is medium to light. A pair of TTC Golden Micro Dustproof (80 M) switches is used.


Side buttons are excellent. There is virtually no pre or post-travel on either button, leading to a pleasing and snappy button response. The pressure point is even across the entirety of these. Button size and placement are very good as actuation is possible easily by rolling one's thumb across. A set of Kailh switches (grayish case, red plunger) is used for these.

At the top of the mouse is a single button for cycling through the set CPI levels, which works fine but feels quite flimsy. A seemingly unbranded tactile switch (blue plunger) is used for this one. At the bottom of the mouse is a slider which switches between off and on-state, which works just fine.

Scroll Wheel

The scroll wheel is very good. Noise levels are mostly under control, and tactility is good, providing nicely separated steps and light yet controlled scrolling. The encoder comes from TTC (white, white core) and has a height of 10 mm. The middle (scroll wheel) click requires medium to high force for actuation. A seemingly unbranded tactile switch (black plunger) is used here.

Surface

The Pulsefire Haste Wireless has a rougher matte surface all over. 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 Pulsefire Haste Wireless is easy. The screws are located beneath the rear skates. The only obstacle here are the screws themselves, which are Torx T6. The top shell is clipped in at the front with two hooks and can be lifted with ease. When putting the mouse back together, I recommend hooking in one side first and only then the other.

The internal design is quite simple. The side buttons sits on their own PCB vertically slotted onto the main PCB. An auxiliary PCB next to the scroll wheel provides wheel illumination. A large plastic case covers the battery as well as sensor and is affixed with three screws. Outside of those and the one for the auxiliary PCB, no additional screws are used for affixing the main PCB. The MCU is a Nordic nRF52833, whose datasheet can be found here. The Bluetooth capability of the MCU remains unused.


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