Retro style suit - cute round keys and candy color design, giving you visual enjoyment and a retro feel. Composite design - Fn composite key saves time and effort, 84-key punk floating keycap, scientific button layout, long-term use to relieve finger fatigue. Easy to use - 2.4G keyboard, easy to use, just plug the USB receiver into the USB port, you can start processing numbers immediately. No driver required. Power saving - using smart power saving chip and 3 power saving modes, the keyboard and mouse settings do not need to replace the battery for several months; including the battery. System compatibility - Optical mouse with modern ergonomic design, DPI adjustable (800-1200-1600). System compatibility: Windows XP/win 7/win 8/win 10. 100% quality assurance.