Surface and Materials
Just like the shape, the surface coating materials are pretty much identical to other Gladius models—I'd call this good news as they are excellent. The whole top area is treated with a half-matte, half-glossy finish, which I first saw with the Cougar Minos series back in the days. It's slightly grainy and quite grippy with dry and slightly wet hands. The small separator panel in the middle has the same texture to it as the rest of the bottom and front shell, which is a more grainy, matte material. The CPI and side buttons are glossy, while the scroll wheel features a textured rubber surface for a nice and tacky grip.
Moving on to the sides, they have the same Mayan-inspired textures as on previous Gladius mice, and some other ROG products of the sort. These rubber sides are of very high quality, and I've never heard of them prematurely wearing out, like with some other brands (however, I can't test durability, so don't take this for granted). These side panels feel nice and tacky and should help prevent any accidental slips with even sweaty hands.
Build QualityBuild quality is decent on the Gladius II Wireless, but not entirely perfect. The scroll wheel can emit a very slight rattling noise (it's a million times better than the one on the Gladius II Origin), and the shell can creak if you press down on it extremely hard, none of which should affect performance in any ways, and everything else is nicely put together; I couldn't find misalignments anywhere, or bad solder joints on the PCB.
We've arrived at the part I subjectively extremely dislike on this mouse: the weight. The mouse weighs a staggering 125 grams without the cable, which can be considered quite high nowadays because most manufacturers have finally realized how important it is to make lighter mice. Now, the standard Gladius models aren't light either, but this one has a hefty built-in battery and apparently hardly any internal modifications to compensate for it. Unfortunately, the mouse is a tad back-heavy as well, which can mainly be felt while claw gripping. Weight is a personal preference, and 125 grams might not sound like much, and I'm pretty sure many people won't really care, but generally, a lighter mouse is better for your wrists in the long run.