Truthfully, there is little to say about the Model O- Wireless that hasn't already been said in our reviews of the Model D Wireless and Model D- Wireless, both of which apply in large parts. Still, some things are different and merit further discussion.

As mentioned in its review, the Model D- Wireless suffers from significant CPI deviation. Thankfully, this is not the case on the Model O- Wireless, and CPI accuracy is near-perfect. Since the Model O- Wireless shares the same firmware, we have to assume that unlike on the Model D- Wireless, the mounting height of the sensor is closer to meeting specifications. CPI deviation being this low is a good thing since, as laid out in the Model D- Wireless review, CPI adjustment in increments of 10 is in fact not functional as of the latest firmware. In the same vein, the sensor lens isn't loose on the Model O- Wireless, which further underlines my conviction that it was merely a one-off on my sample of the Model D- Wireless. What still applies, however, is the slightly higher wireless motion delay. I've suspected that this could be due to a different antenna, and sure enough, the Model O- Wireless has the same antenna as the Model D- Wireless, but ultimately, this is mere speculation and, more importantly, hardly meaningful, as 0.5 added delay is well below what any human is capable of perceiving. Lastly, LOD adjustment too isn't working on the Model O- Wireless, same as the others.

Aside from that, there is simply not much to criticize about the Model O- Wireless. Out of all the other Glorious Wireless mice, I've found the Model O- Wireless to be the most solid in terms of construction as there is absolutely no rattle, creaking, flexing, or whatnot on my sample. Aside from some pre-travel, the clicks too are a strong suit, once again featuring Kailh GM 8.0 switches for the main buttons, which provide a firm and snappy click response. The side buttons are easily better than those on the Model D- Wireless, and quite similar to the Model O Wireless buttons. The scroll wheel, on the other hand, is no different and still genuinely great, with low noise levels and tactile, controlled scrolling. The same applies to the nicely gliding feet and highly flexible charging cable. However, the cable being black instead of white still isn't ideal aesthetically.

At 65 g, the Model O- Wireless is quite a bit heavier than its wired counterpart, which only weighed 58 g. It seems we're seeing the limits of Glorious' wireless design here, which doesn't scale down as well as the wired one did. At the same time, 65 g still is plenty light, and its size and shape put the Model O- Wireless into a unique position. The Model O- has always been the Glorious mouse I've been most fond of, and that hasn't changed with the Model O- Wireless. Outside of several offerings from Finalmouse, there aren't many competitors featuring a small and ambidextrous design such as the Model O- Wireless. And there are even fewer capable of providing a package as strong as the Model O- Wireless consisting of rock-solid sensor and wireless performance, spotless build quality, full software customizability, and at a fair price point. Accordingly, the Model O- Wireless thoroughly earns our Editor's Choice and Budget awards.

When looking at the competition, there are fewer choices than one would think. The $149.99 Razer Viper Ultimate provides excellent performance, incredibly low click latency owing to its optical main button switches, and a lightweight build without holes, but is significantly larger. The same goes the $94.99 MSI Clutch GM41 Lightweight Wireless, which even comes with a docking station, scores in the weight, button, and build quality departments, but suffers from motion delay and a resource-heavy software. In terms of size, the SteelSeries Aerox 3 Wireless is the closest, albeit still decently larger, and the shape is noticeably different. Performance is great, however, buttons and build solid, and the weight competitive, but battery life with illumination is pitiful, and the price quite a bit higher too, at $99.99.