Masione LED USB Gaming Wired Keyboard with 7 Adjustable Colorful Backlights, VMJ-05 Compatible System: Masione keyboard can be easily applied to almost currently operating systems by USB port, compatible with Windows 10, Windows 8, Windows 7, Windows Vista, or Windows XP, Mac OS. Scientific design: 19 Non-Conflict Keys Gaming Keyboard, 8 multimedia keys, Removable Keycaps, Strengthened Space Key. Specially designed keys for enhanced durability and tactile feedback offers a professional gaming feeling. Colorful Backlights: Cool 7 colors changeable breathing or permanent lighting mode. Every backlight have 8 gears to adjust brightness. You can adjust backlit and breathing mode whatever you are playing game or working. ABS Gaming Keyboard: The caps are made of high strength ABS plastic, can be an effective anti-violence and anti-beat frequency of use for high-intensity gamers. Large and Antiskid Hand Holder and ergonomic design help your hand reduce fatigue while playing games. Quality Warranty: We offer 100% customer satisfaction and One-year warranty. Please dont hesitate to contact us for any other issues regarding our products or services!