Software

The K1NG Pro 4K comes with its own lightweight software. 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 six 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 Hz, with 2000 and 4000 Hz exclusive to wireless operation), 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, the sensor mode will default to "corded" with no way of changing it. 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, albeit only for polling rates of 1000 Hz and under. Lastly, "Peak Performance" defines after how much idle time sleep mode is entered. A macro editor can be found on the third page.

All setting 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 63 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, coupled with considerable CPU usage upon changing the page. Upon exiting the application, all processes are terminated, as they should be.

Battery Life

Redragon does not provide any battery life numbers. Though the software features a battery life indicator, it lacks any sort of percentage or segmentation within the gauge, so giving any sort of estimation is plain impossible. In addition, the indicator did not budge at all even after five hours of continuous use at a polling rate of 4000 Hz, so whether it is functional is unclear. By changing the line "ShowBatteryValue=0" to "ShowBatteryValue=1" within the config.ini of the software folder, the software can be made to show a percentage, though it will be inaccurate. For the record, after applying this modification, the indicator stood at 88% of mixed usage (one hour at 4000 Hz, six at 1000 Hz). Using some crude arithmetic, we'd therefore arrive at around 85 hours of expected battery life at 1000 Hz.

Sleep mode is entered after one minute of inactivity by default, but this 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 at 0.283 A when lifted and 0.263 A when not lifted. The battery has a capacity of 400 mAh (3.7 V) and utilizes a 3-pin JST connector.