The lightest full-size gaming mouse.
25 grams. Latency at the theoretical limit.
Pre-orders open Sept 22, 9 AM PT.
$169. 500 units.
Thanks, you're on the list.
Shell & Form
Traditional lightweight mice achieve low weight by cutting out holes, compromising rigidity and feel. The XA25 uses MJF additive manufacturing to print a dense internal orthogrid structure that cannot be replicated by injection molding. The result: full solid surfaces and an unbelievably light yet stiff build. The raw, undyed, uncoated surface is polished to a smooth gray finish.
Performance
Custom in-house firmware achieves less than 3 μs overhead above the theoretical minimum for the given hardware at 8000 Hz polling.
PixArt's flagship sensor, running at 20000 fps. Firmware synchronizes SPI reads to USB frames with sub-microsecond jitter, guaranteeing smooth tracking. Custom sensor settings to completely disable DPI downshift and smoothing.
1.9 mm diameter, smooth non-braided outer jacket. Fully shielded and compliant with USB 2.0 signal integrity (eye diagram) tests at 480 Mbps. Flexible enough to be nearly unnoticeable in use. Read more here.
Nuvoton M483 microcontroller with a 192 MHz Cortex-M4 core. Kailh Sword GM X switches rated 100 million clicks for left and right buttons. TTC Gold Dustproof scroll wheel encoder.
A minimal WebHID-based control panel runs directly in your browser. No drivers, no software installation. Configure dpi, report rate, lift-off distance, and more without bloat. Try it out here.
No OEM. PCB, shell, cable, skates sourced individually from global sources. Final assembly and quality control are performed in California by our own hands. Every unit inspected and tested before it ships.
About
qsxcv has spent over a decade modding, reverse-engineering, and writing custom firmware for gaming mice. All technical engineering on the XA25 is done entirely in-house: firmware, PCB design, and shell design.
We don't outsource our core work or rebrand someone else's mouse. Every microsecond of latency we've shaved, every gram we've removed, every decision in the XA25 is ours.
Read the process →Full Specifications
Blog
Launch
Pre-orders aren't open yet. First come, first served when they are. Drop your email and we'll remind you before it goes live.
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