Software

The Thorn comes with its own lightweight software, which is also compatible with other LAMZU mice such as the Atlantis Pro and 4K. All options are accessible through three different tabs. The first page allows for button remapping to mouse, keyboard, media, and macro functions, along with the ability to adjust debounce time, which effectively controls click latency, at a range of 0 to 30 ms in increments of 1 ms. Profile management is present as well. The second page houses CPI adjustment settings for up to five color-coded levels, ranging from 50 to 26,000 CPI in increments of 50 CPI. Values cannot be put in directly, as this function appears to be bugged. Also included are polling rate (125/250/500/1000/2000/4000 Hz), LOD (1/2 mm), and angle snapping (on/off) adjustment options. "Ripple control" is disabled by default, but can be enabled to apply smoothing, which lessens jitter at higher CPI steps at the cost of increased motion delay. "MotionSync" can be turned on or off, which turning on synchronizes SPI reads with USB polls at the cost of a motion penalty equal to half of the set polling interval. Furthermore, a setting that allows modifying the sensor mode is present. If plugged in or set to 2000 or 4000 Hz, the sensor mode will default to "corded" with no way of changing it. Hence, only when setting polling rate to 1000 Hz or below in wireless mode one can choose between "LP" (low power) and "HP" (high performance) modes, which determine the sensor run mode and therefore battery life. Lastly, "Peak Performance" defines after how much idle time sleep mode is entered. A macro editor can be found on the third page.

All settings changes are saved to the on-board memory, so the software does not need to be running (or even installed) all the time. On my system, the software had a RAM footprint of anywhere between 33 and 48 MB on average when running in the foreground, which changes depending on which page is open, and which doesn't change when minimized to the system tray. Upon exiting the application, all processes are terminated, as they should be.

Battery Life

LAMZU cites a battery life of 80 hours, though without indicating which polling rate or sensor run mode this applies to. The software features a percentage-based battery indicator using increments of 1%, though it isn't particularly accurate or reliable, and not good enough to give even a rough estimate. For the record, after 8 hours of continuous use at 1000 Hz and using the HP (high performance) sensor run mode, the indicator showed 96%. Given the experience with other mice using the same solution, I consider the given figure to be within the realm of possibility, albeit only when using the LP (low power) sensor run mode.

Sleep mode is entered after 30 seconds of inactivity by default, but can be adjusted within the software.

Using the included USB Type-A to Type-C charging cable, I measured the charging speed during the constant current stage, which sits around 0.373 A when lifted and 0.359 A when not lifted. The battery has a capacity of 300 mAh and utilizes a 3-pin JST connector.