Software

Much like most other recent Cooler Master releases, the MM712 is compatible with MasterPlus+, which is also referred to as MasterPlus, but not to be confused with MasterPlus, which is older and incompatible with the MM712. There are separate pages for wireless options, buttons, performance, lighting, macros, and profiles. Wireless options include Sleep Mode, which determines after how many minutes of idling the mouse will enter sleep mode. Low Power Mode defines at which battery percentage Low Power Mode is entered, though no indication is given on what said mode even does. From what I can tell, it merely disables illumination. All buttons except the left main button can be rebound, either to mouse, keyboard, macro, media, or OS functions. Additionally, Mouse Combo allows one to assign further functions accessible upon pressing a dedicated shift button. CPI adjustment is possible for up to seven levels and a range from 100 to 38,000 (interpolated past 19,000), along with the option to adjust x and y-axis values separately. Curiously, only multiples of 100 are available despite the 3370 natively supporting increments of 50 up to 10,000 CPI. Further settings include polling rate adjustment (125, 250, 500, or 1000 Hz), angle snapping (on/off), and lift-off distance (low/high). Performing a surface calibration is supposed to be possible, too, but I've found this option to not be functional. Furthermore, button response time can be adjusted from 1 to 6 ms.

All settings are updated live and saved to the on-board memory, so the software does not need to be running (or be installed) all the time. On my system, the software has a RAM footprint of around 492 MB on average when running in the foreground, which doesn't change when minimized to the system tray. Upon exiting the application, a single process with a RAM footprint of 5 MB keeps running.

Lighting

The MM712 has but a single physical zone for RGB lighting, which is the logo at the back. A total of three pre-defined lighting effects are available in the software: Static, Breathing, and Color Cycle. For most effects, it is possible to set custom colors and adjust brightness as well as transition speed. Of course, disabling the lighting altogether is also possible.

Color accuracy and vibrancy are excellent throughout. Here's a short demonstration video in which I go through the Color Cycle and Breathing lighting effects:

Battery Life

Cooler Master states a battery life of 150 hours in Bluetooth and 80 hours in 2.4 GHz mode without illumination. MasterPlus+ includes a battery level indicator, though it lacks any kind of differentiation, be it bars or a percentage that would allow one to gauge anything. Eyeballing the battery indicator, I'd estimate the indicator to sit at roughly 80% after 10 hours of continuous use with RGB lighting enabled. For what it's worth, it seems curious that there is a percentage-based slider Low Power Mode works off, yet no percentage-based battery indicator.

By default, the MM712 enters sleep mode after five minutes of inactivity. This value can be changed within the software.

Using the included USB Type-A to Type-C charging cable, I also measured the charging speed during the constant current stage, which sits at around 0.270 A. The battery has a capacity of 500 mAh.