PixArt PAW3395/3950 Sensor: The EWEADN S9 features the advanced PAW3395/3950 optical sensor for unparalleled precision and accuracy. Whether you're gaming or working, it ensures smooth and responsive tracking with pixel-perfect precision. Nano Frosted Coating: The mouse is finished with a unique nano frosted coating, offering a comfortable and smooth grip. This innovative texture enhances comfort during extended sessions while preventing fingerprints and wear. Long-Lasting Battery Life: Equipped with a high-capacity 500mAh battery, the EWEADN S9 delivers an impressive battery life of over 80 hours of continuous use, so you can game or work without interruptions. Kailh White Blade Switch: Experience fast and reliable performance with Kailh White Blade switches, boasting a durable 100 million-click lifespan. Enjoy crisp feedback with each press, ensuring longevity and exceptional performance. Ultra-Fast 1K/8K Polling Rate: With an adjustable 1K/8K polling rate, the EWEADN S9 ensures ultra-responsive and lag-free performance. Switch between the two modes for optimal speed and responsiveness based on your preferences. Warm Tips: Thank you for purchasing the EWEADN S9 series light style Tri-mode wireless mouse.Regarding the configuration of the 2.4G receiver, please kindly note that the S9 version isequipped with a standard 1K 2.4G receiver; The S9 Pro version and S9 Ultra version areequipped with a customized 8K 2.4G receiver, not come with a separate 1K 2.4G receiver. lfyou need to purchase separately, please consult customer service, We look forward toreceiving valuable feedback and suggestions. Thank you for your support!