?Powerful Compatibility?: All modes support 99 keys Anti-gosting, perfectly compatible with Windows, Mac OS, Linux, iOS and other operating systems. ?RGB light effects?: K99 is equipped with 15 kinds of light effects, including: wave (default), always bright, breathing and other light effects, 6 levels of adjustable brightness, 5 levels of adjustable speed, 7 kinds of monochromatic light, you can choose according to your preferences. ?Super Long Battery Life?With a battery life of up to 4 years and a large capacity of 2500mAh, it can be used continuously for 48 hours after a full charge (charging time is about 5 hours), easily meeting the needs of a week's office. ?Multi-device Connection?: K99 supports Bluetooth 5.0, 2.4G wireless and USB C wired connection. The connection speed is fast and stable, and you can switch between multiple devices at will, which is convenient for office, gaming and daily use. ?Low Profile Mechanical Keyboard?:K99 use 99 Keys layout, equipped with ultra-thin keycaps and special switches, making the overall thickness of the keyboard even thinner.