Sensor

The Gladius line always used top sensors, and the Wireless edition is no exception. It features the PixArt PMW3389, which is definitely a high-end optical sensor. It's raw, snappy, responsive, and provides 1:1 tracking with the right firmware. It can almost be called flawless except for the smoothing that kicks in on the 1900 CPI step—more on that in the input lag section.

Now for some technical specifications—the nominal acceleration and maximum tracking speed values are 50 G and 400 IPS (10.16 m/s). You can set the resolution from 100 to 16,000 in steps of 50 CPI. Available polling rates are 125, 250, 500, and 1000 Hz, which translates into nominal response times of 8 ms, 4 ms, 2 ms, and 1 ms. Lift-off distance can be configured in the driver software, and there are predefined profiles for ASUS mouse pads.

Battery and Wireless Data

The Gladius II Wireless has a built-in 800 mAH battery, and it seems to be pretty good in terms of battery life. In 2.4 GHz wireless mode, the mouse can be used continuously for about 36 hours without lighting, or 24 hours with lighting on a polling rate of 1000 Hz. When it comes to Bluetooth, battery life goes up to 57 hours with lighting disabled, or 25 hours with it enabled. For any sort of gaming, I would highly advise against using Bluetooth because even though it doesn't have too much latency, the standard 2.4 GHz is still noticeably faster and more responsive.

Paint Test

There is no jitter on the reasonable CPI steps, unwanted angle snapping (you can turn this on in the software, but I would highly advise against it), or sensor lens rattle.

CPI Divergence

CPI divergence on the Gladius is average, with some minor deviations which linearly correlate with the set CPI. If you come from a mouse with a pitch-perfect CPI accuracy, you might need to adjust your in-game sensitivity accordingly.

Perfect Control Speed

Perfect control speed (or PCS for short) is extremely high on this sensor. There is just no way of hitting it while gaming with even incredibly low in-game sensitivity. The nominal perfect control speed is 400 IPS, which translates to about 10.16 meters per second. The PCS values don't correlate with the set resolution, which means 100 and 16,000 CPI both hit their limits at the same value.

Speed Related Accuracy Variance

This test shows the sensor's accuracy at different speeds. You can see me doing a fast swipe to the right before I slowly slide the mouse back to its original position. There is no acceleration or deceleration; any displacement in this test is almost entirely caused by human error.

Polling Rate

All polling rate values are nice and stable since there are no suspicious periodic drops or other sorts of outliers.

Wireless Latency, Input Lag & Smoothing

When it comes to wireless latency, the Gladius II Wireless is definitely a topnotch product as its latency is on par with Logitech's Lightspeed technology. This is a rare thing, and the Gladius II Wireless is the first non-Logitech mouse I've tested so far that has such a low latency—the exact value is about 1 ms. Once the mouse is connected with its cable, there is no latency at all.

There is no detectable smoothing below 1,900 CPI. On and above this value, a small amount of sensor smoothing kicks in, which results in about +2 ms of input lag until the 6,000 CPI step, where it goes up to about +5 ms. Upon reaching the maximum resolution, smoothing increases to approximately +9 ms of input lag. I'd definitely recommend staying below 1,900 CPI for competitive online gaming.