Build Quality

Overall build quality is solid. When shaking the mouse, a very minor rattle comes from an indeterminable source. When applying pressure in various places, some creaking but no flexing of the shell can be observed. Activating the side buttons by squeezing the sides requires excessive force. Lastly, no accidental clicks occur when slamming down the mouse.

Buttons

Main buttons on the Feather are very good. Pre-travel is moderate and post-travel low, and the buttons don't feel entirely firm, but click feel is snappy and pleasant. Button stiffness is medium. The buttons are visually separated from the shell, and some degree of lateral movement can be provoked, though it is hardly noticeable during regular use. A set of Huano Blue (50M) switches (blue shell, blue plunger) is used.


Side buttons on either side are very good. There is some pre-travel, but post-travel is quite low, and the click feel is satisfying. The pressure point is mostly even across the entirety of these buttons, though less so across the back buttons. Button placement is good as actuation is possible quite easily by rolling one's thumb across. Two pairs of Huano switches (red plunger) are used.

At the bottom of the mouse are two sliders controlling lift-off distance and polling rate, along with a button for cycling through the CPI steps, all of which work just fine.

Scroll Wheel

The scroll wheel is good. Scrolling up or down is rather noisy, and tactility is merely average with decent separation, but a lack of definition. Scrolling feels a bit flimsy and "cheap," for lack of a better term. The encoder comes from Kailh. The middle (scroll wheel) click requires medium to high force for actuation. Another Huano switch (red plunger) is used for this one.

Coating

The Feather features several different surface materials. Most of the top has a matte, smooth, and slightly grainy surface. The lower part of each side has a dotted texture, whereas the upper part has physical holes. The top surface doesn't attract fingerprints, dirt, or the likes 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 Feather is easy. Only the two rear skates and the screws beneath them need to be removed. The front is merely clipped in, so separating the top and bottom poses no challenge. The internal design is equally simple. The left and right side buttons sit on their own PCBs, connected to the main PCB with a 3-pin connector. Next to the scroll wheel is an auxiliary PCB for wheel illumination. Everything else sits on the main PCB, which is fairly compact and thin. For whatever reason, a plastic cage is erected above the sensor and MCU. Five screws in total are used to affix the PCB to the bottom shell. The MCU is a Holtek HT32F52352, whose datasheet can be found here.

As an aside, the internal design is flexible enough to allow for rearranging the side buttons. There is enough cable slack for left-handers to swap the left and right-side side-button switch PCBs, in case one wants the side buttons but not the main buttons reversed. In addition to that, the side-button switch PCBs may also be flipped—with the switches facing inward, the buttons don't protrude as much, which may be handy for those annoyed by the side buttons on the other side.


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