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 do occur when slamming down the mouse, provided debounce time is set to 0 or 1 ms.

Buttons

Main buttons on the OGM Cloud are very good. Pre-travel is moderate to low, whereas post-travel is moderate, and button response accordingly is rather snappy and firm. The buttons are visually separated from the shell, and lateral button movement is virtually nonexistent even when provoked. Button stiffness is medium. A pair of Huano switches (blue transparent shell, pink plunger) are used for these.


Side buttons are good. Depending on where the buttons are pressed, pre-travel varies between low to moderate, whereas post-travel is high, as the buttons can be pressed in quite a bit past actuation. The pressure point is mostly 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 Huano switches (white plunger) are used here.

At the bottom of the mouse are buttons for cycling through the set CPI steps and available polling rates, both of which work fine. If held, these buttons also enable one to change connectivity modes (2.4 GHz/Bluetooth) as well as turn the mouse on and off. Two seemingly unbranded tactile switches are used for these.

Scroll Wheel

The scroll wheel is good. Noise levels are high when scrolling up in particular, but tactility is quite good, with fairly distinct steps allowing for controlled scrolling. The encoder comes from F-Switch (brown, green core) and has a height of 11 mm. The middle (scroll wheel) click requires medium to high force for actuation. Another switch from Huano (orange plunger) is used for this one.

Surface

The OGM Cloud has a matte surface all over. Grip is fine, though it does attract fingerprints and dirt quite a bit. It is easy to clean, and there are virtually no signs of wear left after doing so. All in all, good materials.

Button Sound Test

Disassembly

Disassembling the OGM Cloud is easy. The screws are located beneath the front and rear skates. After removing those, one also has to dislodge two clips on each side before the top and bottom can be separated.

The internal design is efficient. The side buttons sit on their own PCB screwed to two posts part of the bottom shell and connected through a ribbon cable. The battery is vertically seated into a slot at the rear. Everything else sits on the very thin and compact main PCB, which is affixed to the bottom shell by four screws. The MCU is a Nordic nRF52840, whose datasheet is found here.


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