The adv was good, but in reality...
I bought this keyboard because it’s advertised with an 8 kHz polling rate, but actual performance is far from the claim. Practical tests show occasional peaks around 500 Hz, while the average polling rate is roughly 50 Hz — completely inadequate if you need responsiveness. The software doesn’t allow changing the polling rate, and I contacted customer support over six times in a year with no response. Misleading marketing and terrible after-sales service. I would never recommend this company to anyone.