Software

The Pugio II is compatible with ASUS's ROG Armoury II software. Options include button remapping (mouse, keyboard, media, and macro functions), CPI adjustment (100–16,000 CPI in increments of 100 CPI) for four levels, angle snapping (on/off), polling rate adjustment (125/250/500/1000 Hz), button debounce time (12–32 ms in increments of 4 ms, no longer accurate as of the latest firmware), LOD adjustment (high/low), and a basic acceleration/deceleration function. Additionally, a basic battery life indicator is included (increments of 25%), along with the ability to configure sleep mode and the battery threshold at which the mouse will start to blink. Macro support, profile management, and a stats recording feature are available as well. On my system, the software had a RAM footprint of 90 MB on average. Even upon terminating the software, a surprisingly large number of processes keep running, totaling 40 MB worth of RAM usage. In fact, these processes run on every system startup and cannot be disabled.

Lighting

The Pugio II has three zones for RGB lighting: scroll wheel, logo at the back, and the underside LED strip. The three zones can be operated independently; i.e., while having the Color Cycle effect run on the scroll wheel, Breathing can run on the logo (or vice versa). Through the software, seven pre-defined lighting effects are available: Static, Breathing, Color Cycle, Reactive, Wave, Comet, and Battery Mode. Furthermore, lighting brightness and color intensity/saturation can be adjusted. Selecting 0% brightness will disable the lighting altogether.

Color accuracy and vibrancy are excellent throughout. Here's a short demonstration video of the Wave, Comet, and Battery Mode lighting effects:

Battery Life

According to ASUS, battery life is up to 69 hours while using 2.4 GHz mode, no RGB illumination, and a polling rate of 1000 Hz. Using Bluetooth mode and again no RGB illumination, a battery life of over 100 hours is stated. Over the course of 15 hours spent with the Pugio II in-game with RGB enabled, I never saw the 75% battery life mark (the battery life indicator scales in increments of 25%), so ASUS's estimation seems to at least be within the realm of possibility.